From adf094931ffb25ef4b381559918f1a34181a5273 Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rjw@sisk.pl>
Date: Mon, 6 Oct 2008 22:46:05 +0200
Subject: [PATCH 01/60] PM: Simplify the new suspend/hibernation framework for
 devices

PM: Simplify the new suspend/hibernation framework for devices

Following the discussion at the Kernel Summit, simplify the new
device PM framework by merging 'struct pm_ops' and
'struct pm_ext_ops' and removing pointers to 'struct pm_ext_ops'
from 'struct platform_driver' and 'struct pci_driver'.

After this change, the suspend/hibernation callbacks will only
reside in 'struct device_driver' as well as at the bus type/
device class/device type level.  Accordingly, PCI and platform
device drivers are now expected to put their suspend/hibernation
callbacks into the 'struct device_driver' embedded in
'struct pci_driver' or 'struct platform_driver', respectively.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/base/platform.c         | 115 +++++++++++++++++---------------
 drivers/base/power/main.c       |  19 +++---
 drivers/pci/pci-driver.c        |  46 +++++--------
 drivers/usb/core/usb.c          |   4 +-
 include/linux/device.h          |   8 +--
 include/linux/pci.h             |   1 -
 include/linux/platform_device.h |   1 -
 include/linux/pm.h              |  76 +++++++--------------
 8 files changed, 119 insertions(+), 151 deletions(-)

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index dfcbfe50486..6c743b6008d 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -503,8 +503,6 @@ int platform_driver_register(struct platform_driver *drv)
 		drv->driver.suspend = platform_drv_suspend;
 	if (drv->resume)
 		drv->driver.resume = platform_drv_resume;
-	if (drv->pm)
-		drv->driver.pm = &drv->pm->base;
 	return driver_register(&drv->driver);
 }
 EXPORT_SYMBOL_GPL(platform_driver_register);
@@ -686,7 +684,10 @@ static int platform_pm_suspend(struct device *dev)
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
 
-	if (drv && drv->pm) {
+	if (!drv)
+		return 0;
+
+	if (drv->pm) {
 		if (drv->pm->suspend)
 			ret = drv->pm->suspend(dev);
 	} else {
@@ -698,16 +699,15 @@ static int platform_pm_suspend(struct device *dev)
 
 static int platform_pm_suspend_noirq(struct device *dev)
 {
-	struct platform_driver *pdrv;
+	struct device_driver *drv = dev->driver;
 	int ret = 0;
 
-	if (!dev->driver)
+	if (!drv)
 		return 0;
 
-	pdrv = to_platform_driver(dev->driver);
-	if (pdrv->pm) {
-		if (pdrv->pm->suspend_noirq)
-			ret = pdrv->pm->suspend_noirq(dev);
+	if (drv->pm) {
+		if (drv->pm->suspend_noirq)
+			ret = drv->pm->suspend_noirq(dev);
 	} else {
 		ret = platform_legacy_suspend_late(dev, PMSG_SUSPEND);
 	}
@@ -720,7 +720,10 @@ static int platform_pm_resume(struct device *dev)
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
 
-	if (drv && drv->pm) {
+	if (!drv)
+		return 0;
+
+	if (drv->pm) {
 		if (drv->pm->resume)
 			ret = drv->pm->resume(dev);
 	} else {
@@ -732,16 +735,15 @@ static int platform_pm_resume(struct device *dev)
 
 static int platform_pm_resume_noirq(struct device *dev)
 {
-	struct platform_driver *pdrv;
+	struct device_driver *drv = dev->driver;
 	int ret = 0;
 
-	if (!dev->driver)
+	if (!drv)
 		return 0;
 
-	pdrv = to_platform_driver(dev->driver);
-	if (pdrv->pm) {
-		if (pdrv->pm->resume_noirq)
-			ret = pdrv->pm->resume_noirq(dev);
+	if (drv->pm) {
+		if (drv->pm->resume_noirq)
+			ret = drv->pm->resume_noirq(dev);
 	} else {
 		ret = platform_legacy_resume_early(dev);
 	}
@@ -780,16 +782,15 @@ static int platform_pm_freeze(struct device *dev)
 
 static int platform_pm_freeze_noirq(struct device *dev)
 {
-	struct platform_driver *pdrv;
+	struct device_driver *drv = dev->driver;
 	int ret = 0;
 
-	if (!dev->driver)
+	if (!drv)
 		return 0;
 
-	pdrv = to_platform_driver(dev->driver);
-	if (pdrv->pm) {
-		if (pdrv->pm->freeze_noirq)
-			ret = pdrv->pm->freeze_noirq(dev);
+	if (drv->pm) {
+		if (drv->pm->freeze_noirq)
+			ret = drv->pm->freeze_noirq(dev);
 	} else {
 		ret = platform_legacy_suspend_late(dev, PMSG_FREEZE);
 	}
@@ -802,7 +803,10 @@ static int platform_pm_thaw(struct device *dev)
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
 
-	if (drv && drv->pm) {
+	if (!drv)
+		return 0;
+
+	if (drv->pm) {
 		if (drv->pm->thaw)
 			ret = drv->pm->thaw(dev);
 	} else {
@@ -814,16 +818,15 @@ static int platform_pm_thaw(struct device *dev)
 
 static int platform_pm_thaw_noirq(struct device *dev)
 {
-	struct platform_driver *pdrv;
+	struct device_driver *drv = dev->driver;
 	int ret = 0;
 
-	if (!dev->driver)
+	if (!drv)
 		return 0;
 
-	pdrv = to_platform_driver(dev->driver);
-	if (pdrv->pm) {
-		if (pdrv->pm->thaw_noirq)
-			ret = pdrv->pm->thaw_noirq(dev);
+	if (drv->pm) {
+		if (drv->pm->thaw_noirq)
+			ret = drv->pm->thaw_noirq(dev);
 	} else {
 		ret = platform_legacy_resume_early(dev);
 	}
@@ -836,7 +839,10 @@ static int platform_pm_poweroff(struct device *dev)
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
 
-	if (drv && drv->pm) {
+	if (!drv)
+		return 0;
+
+	if (drv->pm) {
 		if (drv->pm->poweroff)
 			ret = drv->pm->poweroff(dev);
 	} else {
@@ -848,16 +854,15 @@ static int platform_pm_poweroff(struct device *dev)
 
 static int platform_pm_poweroff_noirq(struct device *dev)
 {
-	struct platform_driver *pdrv;
+	struct device_driver *drv = dev->driver;
 	int ret = 0;
 
-	if (!dev->driver)
+	if (!drv)
 		return 0;
 
-	pdrv = to_platform_driver(dev->driver);
-	if (pdrv->pm) {
-		if (pdrv->pm->poweroff_noirq)
-			ret = pdrv->pm->poweroff_noirq(dev);
+	if (drv->pm) {
+		if (drv->pm->poweroff_noirq)
+			ret = drv->pm->poweroff_noirq(dev);
 	} else {
 		ret = platform_legacy_suspend_late(dev, PMSG_HIBERNATE);
 	}
@@ -870,7 +875,10 @@ static int platform_pm_restore(struct device *dev)
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
 
-	if (drv && drv->pm) {
+	if (!drv)
+		return 0;
+
+	if (drv->pm) {
 		if (drv->pm->restore)
 			ret = drv->pm->restore(dev);
 	} else {
@@ -882,16 +890,15 @@ static int platform_pm_restore(struct device *dev)
 
 static int platform_pm_restore_noirq(struct device *dev)
 {
-	struct platform_driver *pdrv;
+	struct device_driver *drv = dev->driver;
 	int ret = 0;
 
-	if (!dev->driver)
+	if (!drv)
 		return 0;
 
-	pdrv = to_platform_driver(dev->driver);
-	if (pdrv->pm) {
-		if (pdrv->pm->restore_noirq)
-			ret = pdrv->pm->restore_noirq(dev);
+	if (drv->pm) {
+		if (drv->pm->restore_noirq)
+			ret = drv->pm->restore_noirq(dev);
 	} else {
 		ret = platform_legacy_resume_early(dev);
 	}
@@ -912,17 +919,15 @@ static int platform_pm_restore_noirq(struct device *dev)
 
 #endif /* !CONFIG_HIBERNATION */
 
-static struct pm_ext_ops platform_pm_ops = {
-	.base = {
-		.prepare = platform_pm_prepare,
-		.complete = platform_pm_complete,
-		.suspend = platform_pm_suspend,
-		.resume = platform_pm_resume,
-		.freeze = platform_pm_freeze,
-		.thaw = platform_pm_thaw,
-		.poweroff = platform_pm_poweroff,
-		.restore = platform_pm_restore,
-	},
+static struct dev_pm_ops platform_dev_pm_ops = {
+	.prepare = platform_pm_prepare,
+	.complete = platform_pm_complete,
+	.suspend = platform_pm_suspend,
+	.resume = platform_pm_resume,
+	.freeze = platform_pm_freeze,
+	.thaw = platform_pm_thaw,
+	.poweroff = platform_pm_poweroff,
+	.restore = platform_pm_restore,
 	.suspend_noirq = platform_pm_suspend_noirq,
 	.resume_noirq = platform_pm_resume_noirq,
 	.freeze_noirq = platform_pm_freeze_noirq,
@@ -931,7 +936,7 @@ static struct pm_ext_ops platform_pm_ops = {
 	.restore_noirq = platform_pm_restore_noirq,
 };
 
-#define PLATFORM_PM_OPS_PTR	&platform_pm_ops
+#define PLATFORM_PM_OPS_PTR	(&platform_dev_pm_ops)
 
 #else /* !CONFIG_PM_SLEEP */
 
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 692c20ba514..a8e4dcbcaf7 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -112,7 +112,8 @@ void device_pm_remove(struct device *dev)
  *	@ops:	PM operations to choose from.
  *	@state:	PM transition of the system being carried out.
  */
-static int pm_op(struct device *dev, struct pm_ops *ops, pm_message_t state)
+static int pm_op(struct device *dev, struct dev_pm_ops *ops,
+			pm_message_t state)
 {
 	int error = 0;
 
@@ -174,7 +175,7 @@ static int pm_op(struct device *dev, struct pm_ops *ops, pm_message_t state)
  *	The operation is executed with interrupts disabled by the only remaining
  *	functional CPU in the system.
  */
-static int pm_noirq_op(struct device *dev, struct pm_ext_ops *ops,
+static int pm_noirq_op(struct device *dev, struct dev_pm_ops *ops,
 			pm_message_t state)
 {
 	int error = 0;
@@ -354,7 +355,7 @@ static int resume_device(struct device *dev, pm_message_t state)
 	if (dev->bus) {
 		if (dev->bus->pm) {
 			pm_dev_dbg(dev, state, "");
-			error = pm_op(dev, &dev->bus->pm->base, state);
+			error = pm_op(dev, dev->bus->pm, state);
 		} else if (dev->bus->resume) {
 			pm_dev_dbg(dev, state, "legacy ");
 			error = dev->bus->resume(dev);
@@ -451,9 +452,9 @@ static void complete_device(struct device *dev, pm_message_t state)
 		dev->type->pm->complete(dev);
 	}
 
-	if (dev->bus && dev->bus->pm && dev->bus->pm->base.complete) {
+	if (dev->bus && dev->bus->pm && dev->bus->pm->complete) {
 		pm_dev_dbg(dev, state, "completing ");
-		dev->bus->pm->base.complete(dev);
+		dev->bus->pm->complete(dev);
 	}
 
 	up(&dev->sem);
@@ -624,7 +625,7 @@ static int suspend_device(struct device *dev, pm_message_t state)
 	if (dev->bus) {
 		if (dev->bus->pm) {
 			pm_dev_dbg(dev, state, "");
-			error = pm_op(dev, &dev->bus->pm->base, state);
+			error = pm_op(dev, dev->bus->pm, state);
 		} else if (dev->bus->suspend) {
 			pm_dev_dbg(dev, state, "legacy ");
 			error = dev->bus->suspend(dev, state);
@@ -685,10 +686,10 @@ static int prepare_device(struct device *dev, pm_message_t state)
 
 	down(&dev->sem);
 
-	if (dev->bus && dev->bus->pm && dev->bus->pm->base.prepare) {
+	if (dev->bus && dev->bus->pm && dev->bus->pm->prepare) {
 		pm_dev_dbg(dev, state, "preparing ");
-		error = dev->bus->pm->base.prepare(dev);
-		suspend_report_result(dev->bus->pm->base.prepare, error);
+		error = dev->bus->pm->prepare(dev);
+		suspend_report_result(dev->bus->pm->prepare, error);
 		if (error)
 			goto End;
 	}
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index b4cdd690ae7..4042d211c3e 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -433,8 +433,7 @@ static int pci_pm_suspend(struct device *dev)
 
 static int pci_pm_suspend_noirq(struct device *dev)
 {
-	struct pci_dev *pci_dev = to_pci_dev(dev);
-	struct pci_driver *drv = pci_dev->driver;
+	struct device_driver *drv = dev->driver;
 	int error = 0;
 
 	if (drv && drv->pm) {
@@ -469,11 +468,10 @@ static int pci_pm_resume(struct device *dev)
 
 static int pci_pm_resume_noirq(struct device *dev)
 {
-	struct pci_dev *pci_dev = to_pci_dev(dev);
-	struct pci_driver *drv = pci_dev->driver;
+	struct device_driver *drv = dev->driver;
 	int error = 0;
 
-	pci_fixup_device(pci_fixup_resume_early, pci_dev);
+	pci_fixup_device(pci_fixup_resume_early, to_pci_dev(dev));
 
 	if (drv && drv->pm) {
 		if (drv->pm->resume_noirq)
@@ -519,8 +517,7 @@ static int pci_pm_freeze(struct device *dev)
 
 static int pci_pm_freeze_noirq(struct device *dev)
 {
-	struct pci_dev *pci_dev = to_pci_dev(dev);
-	struct pci_driver *drv = pci_dev->driver;
+	struct device_driver *drv = dev->driver;
 	int error = 0;
 
 	if (drv && drv->pm) {
@@ -553,15 +550,14 @@ static int pci_pm_thaw(struct device *dev)
 
 static int pci_pm_thaw_noirq(struct device *dev)
 {
-	struct pci_dev *pci_dev = to_pci_dev(dev);
-	struct pci_driver *drv = pci_dev->driver;
+	struct device_driver *drv = dev->driver;
 	int error = 0;
 
 	if (drv && drv->pm) {
 		if (drv->pm->thaw_noirq)
 			error = drv->pm->thaw_noirq(dev);
 	} else {
-		pci_fixup_device(pci_fixup_resume_early, pci_dev);
+		pci_fixup_device(pci_fixup_resume_early, to_pci_dev(dev));
 		error = pci_legacy_resume_early(dev);
 	}
 
@@ -589,8 +585,7 @@ static int pci_pm_poweroff(struct device *dev)
 
 static int pci_pm_poweroff_noirq(struct device *dev)
 {
-	struct pci_dev *pci_dev = to_pci_dev(dev);
-	struct pci_driver *drv = pci_dev->driver;
+	struct device_driver *drv = dev->driver;
 	int error = 0;
 
 	if (drv && drv->pm) {
@@ -625,7 +620,7 @@ static int pci_pm_restore(struct device *dev)
 static int pci_pm_restore_noirq(struct device *dev)
 {
 	struct pci_dev *pci_dev = to_pci_dev(dev);
-	struct pci_driver *drv = pci_dev->driver;
+	struct device_driver *drv = dev->driver;
 	int error = 0;
 
 	pci_fixup_device(pci_fixup_resume, pci_dev);
@@ -654,17 +649,15 @@ static int pci_pm_restore_noirq(struct device *dev)
 
 #endif /* !CONFIG_HIBERNATION */
 
-struct pm_ext_ops pci_pm_ops = {
-	.base = {
-		.prepare = pci_pm_prepare,
-		.complete = pci_pm_complete,
-		.suspend = pci_pm_suspend,
-		.resume = pci_pm_resume,
-		.freeze = pci_pm_freeze,
-		.thaw = pci_pm_thaw,
-		.poweroff = pci_pm_poweroff,
-		.restore = pci_pm_restore,
-	},
+struct dev_pm_ops pci_dev_pm_ops = {
+	.prepare = pci_pm_prepare,
+	.complete = pci_pm_complete,
+	.suspend = pci_pm_suspend,
+	.resume = pci_pm_resume,
+	.freeze = pci_pm_freeze,
+	.thaw = pci_pm_thaw,
+	.poweroff = pci_pm_poweroff,
+	.restore = pci_pm_restore,
 	.suspend_noirq = pci_pm_suspend_noirq,
 	.resume_noirq = pci_pm_resume_noirq,
 	.freeze_noirq = pci_pm_freeze_noirq,
@@ -673,7 +666,7 @@ struct pm_ext_ops pci_pm_ops = {
 	.restore_noirq = pci_pm_restore_noirq,
 };
 
-#define PCI_PM_OPS_PTR	&pci_pm_ops
+#define PCI_PM_OPS_PTR	(&pci_dev_pm_ops)
 
 #else /* !CONFIG_PM_SLEEP */
 
@@ -703,9 +696,6 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
 	drv->driver.owner = owner;
 	drv->driver.mod_name = mod_name;
 
-	if (drv->pm)
-		drv->driver.pm = &drv->pm->base;
-
 	spin_lock_init(&drv->dynids.lock);
 	INIT_LIST_HEAD(&drv->dynids.list);
 
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index be1fa0723f2..399e15fc505 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -286,7 +286,7 @@ static int usb_dev_restore(struct device *dev)
 	return usb_resume(dev);
 }
 
-static struct pm_ops usb_device_pm_ops = {
+static struct dev_pm_ops usb_device_pm_ops = {
 	.prepare =	usb_dev_prepare,
 	.complete =	usb_dev_complete,
 	.suspend =	usb_dev_suspend,
@@ -301,7 +301,7 @@ static struct pm_ops usb_device_pm_ops = {
 
 #define ksuspend_usb_init()	0
 #define ksuspend_usb_cleanup()	do {} while (0)
-#define usb_device_pm_ops	(*(struct pm_ops *)0)
+#define usb_device_pm_ops	(*(struct dev_pm_ops *)0)
 
 #endif	/* CONFIG_PM */
 
diff --git a/include/linux/device.h b/include/linux/device.h
index 1a3686d15f9..4a520051c31 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -65,7 +65,7 @@ struct bus_type {
 	int (*resume_early)(struct device *dev);
 	int (*resume)(struct device *dev);
 
-	struct pm_ext_ops *pm;
+	struct dev_pm_ops *pm;
 
 	struct bus_type_private *p;
 };
@@ -133,7 +133,7 @@ struct device_driver {
 	int (*resume) (struct device *dev);
 	struct attribute_group **groups;
 
-	struct pm_ops *pm;
+	struct dev_pm_ops *pm;
 
 	struct driver_private *p;
 };
@@ -198,7 +198,7 @@ struct class {
 	int (*suspend)(struct device *dev, pm_message_t state);
 	int (*resume)(struct device *dev);
 
-	struct pm_ops *pm;
+	struct dev_pm_ops *pm;
 	struct class_private *p;
 };
 
@@ -291,7 +291,7 @@ struct device_type {
 	int (*suspend)(struct device *dev, pm_message_t state);
 	int (*resume)(struct device *dev);
 
-	struct pm_ops *pm;
+	struct dev_pm_ops *pm;
 };
 
 /* interface for exporting device attributes */
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 03b0b8c3c81..4bb156ba854 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -421,7 +421,6 @@ struct pci_driver {
 	int  (*resume_early) (struct pci_dev *dev);
 	int  (*resume) (struct pci_dev *dev);	                /* Device woken up */
 	void (*shutdown) (struct pci_dev *dev);
-	struct pm_ext_ops *pm;
 	struct pci_error_handlers *err_handler;
 	struct device_driver	driver;
 	struct pci_dynids dynids;
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 4b8cc6a3247..9a342699c60 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -55,7 +55,6 @@ struct platform_driver {
 	int (*suspend_late)(struct platform_device *, pm_message_t state);
 	int (*resume_early)(struct platform_device *);
 	int (*resume)(struct platform_device *);
-	struct pm_ext_ops *pm;
 	struct device_driver driver;
 };
 
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 42de4003c4e..5785666d0cc 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -41,7 +41,7 @@ typedef struct pm_message {
 } pm_message_t;
 
 /**
- * struct pm_ops - device PM callbacks
+ * struct dev_pm_ops - device PM callbacks
  *
  * Several driver power state transitions are externally visible, affecting
  * the state of pending I/O queues and (for drivers that touch hardware)
@@ -126,46 +126,6 @@ typedef struct pm_message {
  *	On most platforms, there are no restrictions on availability of
  *	resources like clocks during @restore().
  *
- * All of the above callbacks, except for @complete(), return error codes.
- * However, the error codes returned by the resume operations, @resume(),
- * @thaw(), and @restore(), do not cause the PM core to abort the resume
- * transition during which they are returned.  The error codes returned in
- * that cases are only printed by the PM core to the system logs for debugging
- * purposes.  Still, it is recommended that drivers only return error codes
- * from their resume methods in case of an unrecoverable failure (i.e. when the
- * device being handled refuses to resume and becomes unusable) to allow us to
- * modify the PM core in the future, so that it can avoid attempting to handle
- * devices that failed to resume and their children.
- *
- * It is allowed to unregister devices while the above callbacks are being
- * executed.  However, it is not allowed to unregister a device from within any
- * of its own callbacks.
- */
-
-struct pm_ops {
-	int (*prepare)(struct device *dev);
-	void (*complete)(struct device *dev);
-	int (*suspend)(struct device *dev);
-	int (*resume)(struct device *dev);
-	int (*freeze)(struct device *dev);
-	int (*thaw)(struct device *dev);
-	int (*poweroff)(struct device *dev);
-	int (*restore)(struct device *dev);
-};
-
-/**
- * struct pm_ext_ops - extended device PM callbacks
- *
- * Some devices require certain operations related to suspend and hibernation
- * to be carried out with interrupts disabled.  Thus, 'struct pm_ext_ops' below
- * is defined, adding callbacks to be executed with interrupts disabled to
- * 'struct pm_ops'.
- *
- * The following callbacks included in 'struct pm_ext_ops' are executed with
- * the nonboot CPUs switched off and with interrupts disabled on the only
- * functional CPU.  They also are executed with the PM core list of devices
- * locked, so they must NOT unregister any devices.
- *
  * @suspend_noirq: Complete the operations of ->suspend() by carrying out any
  *	actions required for suspending the device that need interrupts to be
  *	disabled
@@ -190,18 +150,32 @@ struct pm_ops {
  *	actions required for restoring the operations of the device that need
  *	interrupts to be disabled
  *
- * All of the above callbacks return error codes, but the error codes returned
- * by the resume operations, @resume_noirq(), @thaw_noirq(), and
- * @restore_noirq(), do not cause the PM core to abort the resume transition
- * during which they are returned.  The error codes returned in that cases are
- * only printed by the PM core to the system logs for debugging purposes.
- * Still, as stated above, it is recommended that drivers only return error
- * codes from their resume methods if the device being handled fails to resume
- * and is not usable any more.
+ * All of the above callbacks, except for @complete(), return error codes.
+ * However, the error codes returned by the resume operations, @resume(),
+ * @thaw(), @restore(), @resume_noirq(), @thaw_noirq(), and @restore_noirq() do
+ * not cause the PM core to abort the resume transition during which they are
+ * returned.  The error codes returned in that cases are only printed by the PM
+ * core to the system logs for debugging purposes.  Still, it is recommended
+ * that drivers only return error codes from their resume methods in case of an
+ * unrecoverable failure (i.e. when the device being handled refuses to resume
+ * and becomes unusable) to allow us to modify the PM core in the future, so
+ * that it can avoid attempting to handle devices that failed to resume and
+ * their children.
+ *
+ * It is allowed to unregister devices while the above callbacks are being
+ * executed.  However, it is not allowed to unregister a device from within any
+ * of its own callbacks.
  */
 
-struct pm_ext_ops {
-	struct pm_ops base;
+struct dev_pm_ops {
+	int (*prepare)(struct device *dev);
+	void (*complete)(struct device *dev);
+	int (*suspend)(struct device *dev);
+	int (*resume)(struct device *dev);
+	int (*freeze)(struct device *dev);
+	int (*thaw)(struct device *dev);
+	int (*poweroff)(struct device *dev);
+	int (*restore)(struct device *dev);
 	int (*suspend_noirq)(struct device *dev);
 	int (*resume_noirq)(struct device *dev);
 	int (*freeze_noirq)(struct device *dev);

From 7f4f5d4516b441d712fa0ffe5380618fb7fc545e Mon Sep 17 00:00:00 2001
From: Alan Stern <stern@rowland.harvard.edu>
Date: Mon, 17 Nov 2008 11:14:19 -0500
Subject: [PATCH 02/60] Fix misspellings in pm.h macros

This patch (as1167) fixes some misspellings in various recently-added
macros in pm.h.  Fortunately these macros are not yet used anywhere.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
---
 include/linux/pm.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/linux/pm.h b/include/linux/pm.h
index 5785666d0cc..de2e0a8f672 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -252,7 +252,7 @@ struct dev_pm_ops {
 #define PM_EVENT_SLEEP		(PM_EVENT_SUSPEND | PM_EVENT_HIBERNATE)
 #define PM_EVENT_USER_SUSPEND	(PM_EVENT_USER | PM_EVENT_SUSPEND)
 #define PM_EVENT_USER_RESUME	(PM_EVENT_USER | PM_EVENT_RESUME)
-#define PM_EVENT_REMOTE_WAKEUP	(PM_EVENT_REMOTE | PM_EVENT_RESUME)
+#define PM_EVENT_REMOTE_RESUME	(PM_EVENT_REMOTE | PM_EVENT_RESUME)
 #define PM_EVENT_AUTO_SUSPEND	(PM_EVENT_AUTO | PM_EVENT_SUSPEND)
 #define PM_EVENT_AUTO_RESUME	(PM_EVENT_AUTO | PM_EVENT_RESUME)
 
@@ -265,15 +265,15 @@ struct dev_pm_ops {
 #define PMSG_THAW	((struct pm_message){ .event = PM_EVENT_THAW, })
 #define PMSG_RESTORE	((struct pm_message){ .event = PM_EVENT_RESTORE, })
 #define PMSG_RECOVER	((struct pm_message){ .event = PM_EVENT_RECOVER, })
-#define PMSG_USER_SUSPEND	((struct pm_messge) \
+#define PMSG_USER_SUSPEND	((struct pm_message) \
 					{ .event = PM_EVENT_USER_SUSPEND, })
-#define PMSG_USER_RESUME	((struct pm_messge) \
+#define PMSG_USER_RESUME	((struct pm_message) \
 					{ .event = PM_EVENT_USER_RESUME, })
-#define PMSG_REMOTE_RESUME	((struct pm_messge) \
+#define PMSG_REMOTE_RESUME	((struct pm_message) \
 					{ .event = PM_EVENT_REMOTE_RESUME, })
-#define PMSG_AUTO_SUSPEND	((struct pm_messge) \
+#define PMSG_AUTO_SUSPEND	((struct pm_message) \
 					{ .event = PM_EVENT_AUTO_SUSPEND, })
-#define PMSG_AUTO_RESUME		((struct pm_messge) \
+#define PMSG_AUTO_RESUME	((struct pm_message) \
 					{ .event = PM_EVENT_AUTO_RESUME, })
 
 /**

From 929d2fa5955ab27aa21fac615b23e0e92e8dc3a0 Mon Sep 17 00:00:00 2001
From: Matthew Wilcox <matthew@wil.cx>
Date: Thu, 16 Oct 2008 15:51:35 -0600
Subject: [PATCH 03/60] driver core: Rearrange struct device for better packing

This minor rearrangement saves 16 bytes from sizeof(struct device)
according to pahole.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 include/linux/device.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/linux/device.h b/include/linux/device.h
index 4a520051c31..4e14fad4143 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -373,9 +373,9 @@ struct device {
 
 	struct kobject kobj;
 	char	bus_id[BUS_ID_SIZE];	/* position on parent bus */
+	unsigned		uevent_suppress:1;
 	const char		*init_name; /* initial name of the device */
 	struct device_type	*type;
-	unsigned		uevent_suppress:1;
 
 	struct semaphore	sem;	/* semaphore to synchronize calls to
 					 * its driver.
@@ -408,12 +408,13 @@ struct device {
 	/* arch specific additions */
 	struct dev_archdata	archdata;
 
+	dev_t			devt;	/* dev_t, creates the sysfs "dev" */
+
 	spinlock_t		devres_lock;
 	struct list_head	devres_head;
 
 	struct klist_node	knode_class;
 	struct class		*class;
-	dev_t			devt;	/* dev_t, creates the sysfs "dev" */
 	struct attribute_group	**groups;	/* optional groups */
 
 	void	(*release)(struct device *dev);

From 210272a28465a7a31bcd580d2f9529f924965aa5 Mon Sep 17 00:00:00 2001
From: Matthew Wilcox <matthew@wil.cx>
Date: Thu, 16 Oct 2008 14:57:54 -0600
Subject: [PATCH 04/60] driver core: Remove completion from struct klist_node

Removing the completion from klist_node reduces its size from 64 bytes
to 28 on x86-64.  To maintain the semantics of klist_remove(), we add
a single list of klist nodes which are pending deletion and scan them.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 include/linux/klist.h |  2 --
 lib/klist.c           | 43 ++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 40 insertions(+), 5 deletions(-)

diff --git a/include/linux/klist.h b/include/linux/klist.h
index 8ea98db223e..d5a27af9dba 100644
--- a/include/linux/klist.h
+++ b/include/linux/klist.h
@@ -13,7 +13,6 @@
 #define _LINUX_KLIST_H
 
 #include <linux/spinlock.h>
-#include <linux/completion.h>
 #include <linux/kref.h>
 #include <linux/list.h>
 
@@ -41,7 +40,6 @@ struct klist_node {
 	void			*n_klist;	/* never access directly */
 	struct list_head	n_node;
 	struct kref		n_ref;
-	struct completion	n_removed;
 };
 
 extern void klist_add_tail(struct klist_node *n, struct klist *k);
diff --git a/lib/klist.c b/lib/klist.c
index bbdd3015c2c..573d6068a42 100644
--- a/lib/klist.c
+++ b/lib/klist.c
@@ -36,6 +36,7 @@
 
 #include <linux/klist.h>
 #include <linux/module.h>
+#include <linux/sched.h>
 
 /*
  * Use the lowest bit of n_klist to mark deleted nodes and exclude
@@ -108,7 +109,6 @@ static void add_tail(struct klist *k, struct klist_node *n)
 static void klist_node_init(struct klist *k, struct klist_node *n)
 {
 	INIT_LIST_HEAD(&n->n_node);
-	init_completion(&n->n_removed);
 	kref_init(&n->n_ref);
 	knode_set_klist(n, k);
 	if (k->get)
@@ -171,13 +171,34 @@ void klist_add_before(struct klist_node *n, struct klist_node *pos)
 }
 EXPORT_SYMBOL_GPL(klist_add_before);
 
+struct klist_waiter {
+	struct list_head list;
+	struct klist_node *node;
+	struct task_struct *process;
+	int woken;
+};
+
+static DEFINE_SPINLOCK(klist_remove_lock);
+static LIST_HEAD(klist_remove_waiters);
+
 static void klist_release(struct kref *kref)
 {
+	struct klist_waiter *waiter, *tmp;
 	struct klist_node *n = container_of(kref, struct klist_node, n_ref);
 
 	WARN_ON(!knode_dead(n));
 	list_del(&n->n_node);
-	complete(&n->n_removed);
+	spin_lock(&klist_remove_lock);
+	list_for_each_entry_safe(waiter, tmp, &klist_remove_waiters, list) {
+		if (waiter->node != n)
+			continue;
+
+		waiter->woken = 1;
+		mb();
+		wake_up_process(waiter->process);
+		list_del(&waiter->list);
+	}
+	spin_unlock(&klist_remove_lock);
 	knode_set_klist(n, NULL);
 }
 
@@ -217,8 +238,24 @@ EXPORT_SYMBOL_GPL(klist_del);
  */
 void klist_remove(struct klist_node *n)
 {
+	struct klist_waiter waiter;
+
+	waiter.node = n;
+	waiter.process = current;
+	waiter.woken = 0;
+	spin_lock(&klist_remove_lock);
+	list_add(&waiter.list, &klist_remove_waiters);
+	spin_unlock(&klist_remove_lock);
+
 	klist_del(n);
-	wait_for_completion(&n->n_removed);
+
+	for (;;) {
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		if (waiter.woken)
+			break;
+		schedule();
+	}
+	__set_current_state(TASK_RUNNING);
 }
 EXPORT_SYMBOL_GPL(klist_remove);
 

From 1e0b2cf933ebf32494eba3f668859ba57f06a951 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Thu, 30 Oct 2008 01:36:48 +0100
Subject: [PATCH 05/60] driver core: struct device - replace bus_id with
 dev_name(), dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/base/attribute_container.c |  2 +-
 drivers/base/bus.c                 | 12 +++++-----
 drivers/base/core.c                | 36 +++++++++++++++---------------
 drivers/base/dd.c                  | 12 +++++-----
 drivers/base/firmware_class.c      |  8 +------
 drivers/base/isa.c                 |  7 +++---
 drivers/base/platform.c            | 15 ++++++-------
 drivers/base/power/main.c          |  2 +-
 drivers/base/power/trace.c         |  4 ++--
 9 files changed, 45 insertions(+), 53 deletions(-)

diff --git a/drivers/base/attribute_container.c b/drivers/base/attribute_container.c
index f57652db0a2..b9cda053d3c 100644
--- a/drivers/base/attribute_container.c
+++ b/drivers/base/attribute_container.c
@@ -167,7 +167,7 @@ attribute_container_add_device(struct device *dev,
 		ic->classdev.parent = get_device(dev);
 		ic->classdev.class = cont->class;
 		cont->class->dev_release = attribute_container_release;
-		strcpy(ic->classdev.bus_id, dev->bus_id);
+		dev_set_name(&ic->classdev, dev_name(dev));
 		if (fn)
 			fn(cont, dev, &ic->classdev);
 		else
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 5aee1c0169e..83f32b891fa 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -333,7 +333,7 @@ static int match_name(struct device *dev, void *data)
 {
 	const char *name = data;
 
-	return sysfs_streq(name, dev->bus_id);
+	return sysfs_streq(name, dev_name(dev));
 }
 
 /**
@@ -461,12 +461,12 @@ int bus_add_device(struct device *dev)
 	int error = 0;
 
 	if (bus) {
-		pr_debug("bus: '%s': add device %s\n", bus->name, dev->bus_id);
+		pr_debug("bus: '%s': add device %s\n", bus->name, dev_name(dev));
 		error = device_add_attrs(bus, dev);
 		if (error)
 			goto out_put;
 		error = sysfs_create_link(&bus->p->devices_kset->kobj,
-						&dev->kobj, dev->bus_id);
+						&dev->kobj, dev_name(dev));
 		if (error)
 			goto out_id;
 		error = sysfs_create_link(&dev->kobj,
@@ -482,7 +482,7 @@ int bus_add_device(struct device *dev)
 out_deprecated:
 	sysfs_remove_link(&dev->kobj, "subsystem");
 out_subsys:
-	sysfs_remove_link(&bus->p->devices_kset->kobj, dev->bus_id);
+	sysfs_remove_link(&bus->p->devices_kset->kobj, dev_name(dev));
 out_id:
 	device_remove_attrs(bus, dev);
 out_put:
@@ -526,13 +526,13 @@ void bus_remove_device(struct device *dev)
 		sysfs_remove_link(&dev->kobj, "subsystem");
 		remove_deprecated_bus_links(dev);
 		sysfs_remove_link(&dev->bus->p->devices_kset->kobj,
-				  dev->bus_id);
+				  dev_name(dev));
 		device_remove_attrs(dev->bus, dev);
 		if (klist_node_attached(&dev->knode_bus))
 			klist_del(&dev->knode_bus);
 
 		pr_debug("bus: '%s': remove device %s\n",
-			 dev->bus->name, dev->bus_id);
+			 dev->bus->name, dev_name(dev));
 		device_release_driver(dev);
 		bus_put(dev->bus);
 	}
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 8c2cc2648f5..14aa2b6953c 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -119,7 +119,7 @@ static void device_release(struct kobject *kobj)
 	else
 		WARN(1, KERN_ERR "Device '%s' does not have a release() "
 			"function, it is broken and must be fixed.\n",
-			dev->bus_id);
+			dev_name(dev));
 }
 
 static struct kobj_type device_ktype = {
@@ -209,7 +209,7 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj,
 		retval = dev->bus->uevent(dev, env);
 		if (retval)
 			pr_debug("device: '%s': %s: bus uevent() returned %d\n",
-				 dev->bus_id, __func__, retval);
+				 dev_name(dev), __func__, retval);
 	}
 
 	/* have the class specific function add its stuff */
@@ -217,7 +217,7 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj,
 		retval = dev->class->dev_uevent(dev, env);
 		if (retval)
 			pr_debug("device: '%s': %s: class uevent() "
-				 "returned %d\n", dev->bus_id,
+				 "returned %d\n", dev_name(dev),
 				 __func__, retval);
 	}
 
@@ -226,7 +226,7 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj,
 		retval = dev->type->uevent(dev, env);
 		if (retval)
 			pr_debug("device: '%s': %s: dev_type uevent() "
-				 "returned %d\n", dev->bus_id,
+				 "returned %d\n", dev_name(dev),
 				 __func__, retval);
 	}
 
@@ -672,7 +672,7 @@ static int device_add_class_symlinks(struct device *dev)
 	if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
 	    device_is_not_partition(dev)) {
 		error = sysfs_create_link(&dev->class->p->class_subsys.kobj,
-					  &dev->kobj, dev->bus_id);
+					  &dev->kobj, dev_name(dev));
 		if (error)
 			goto out_subsys;
 	}
@@ -712,11 +712,11 @@ out_busid:
 	if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
 	    device_is_not_partition(dev))
 		sysfs_remove_link(&dev->class->p->class_subsys.kobj,
-				  dev->bus_id);
+				  dev_name(dev));
 #else
 	/* link in the class directory pointing to the device */
 	error = sysfs_create_link(&dev->class->p->class_subsys.kobj,
-				  &dev->kobj, dev->bus_id);
+				  &dev->kobj, dev_name(dev));
 	if (error)
 		goto out_subsys;
 
@@ -729,7 +729,7 @@ out_busid:
 	return 0;
 
 out_busid:
-	sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev->bus_id);
+	sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev));
 #endif
 
 out_subsys:
@@ -758,12 +758,12 @@ static void device_remove_class_symlinks(struct device *dev)
 	if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
 	    device_is_not_partition(dev))
 		sysfs_remove_link(&dev->class->p->class_subsys.kobj,
-				  dev->bus_id);
+				  dev_name(dev));
 #else
 	if (dev->parent && device_is_not_partition(dev))
 		sysfs_remove_link(&dev->kobj, "device");
 
-	sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev->bus_id);
+	sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev));
 #endif
 
 	sysfs_remove_link(&dev->kobj, "subsystem");
@@ -866,7 +866,7 @@ int device_add(struct device *dev)
 	if (!strlen(dev->bus_id))
 		goto done;
 
-	pr_debug("device: '%s': %s\n", dev->bus_id, __func__);
+	pr_debug("device: '%s': %s\n", dev_name(dev), __func__);
 
 	parent = get_device(dev->parent);
 	setup_parent(dev, parent);
@@ -876,7 +876,7 @@ int device_add(struct device *dev)
 		set_dev_node(dev, dev_to_node(parent));
 
 	/* first, register with generic layer. */
-	error = kobject_add(&dev->kobj, dev->kobj.parent, "%s", dev->bus_id);
+	error = kobject_add(&dev->kobj, dev->kobj.parent, "%s", dev_name(dev));
 	if (error)
 		goto Error;
 
@@ -1086,7 +1086,7 @@ void device_del(struct device *dev)
  */
 void device_unregister(struct device *dev)
 {
-	pr_debug("device: '%s': %s\n", dev->bus_id, __func__);
+	pr_debug("device: '%s': %s\n", dev_name(dev), __func__);
 	device_del(dev);
 	put_device(dev);
 }
@@ -1199,7 +1199,7 @@ EXPORT_SYMBOL_GPL(device_remove_file);
 
 static void device_create_release(struct device *dev)
 {
-	pr_debug("device: '%s': %s\n", dev->bus_id, __func__);
+	pr_debug("device: '%s': %s\n", dev_name(dev), __func__);
 	kfree(dev);
 }
 
@@ -1344,7 +1344,7 @@ int device_rename(struct device *dev, char *new_name)
 	if (!dev)
 		return -EINVAL;
 
-	pr_debug("device: '%s': %s: renaming to '%s'\n", dev->bus_id,
+	pr_debug("device: '%s': %s: renaming to '%s'\n", dev_name(dev),
 		 __func__, new_name);
 
 #ifdef CONFIG_SYSFS_DEPRECATED
@@ -1381,7 +1381,7 @@ int device_rename(struct device *dev, char *new_name)
 #else
 	if (dev->class) {
 		error = sysfs_create_link_nowarn(&dev->class->p->class_subsys.kobj,
-						 &dev->kobj, dev->bus_id);
+						 &dev->kobj, dev_name(dev));
 		if (error)
 			goto out;
 		sysfs_remove_link(&dev->class->p->class_subsys.kobj,
@@ -1459,8 +1459,8 @@ int device_move(struct device *dev, struct device *new_parent)
 	new_parent = get_device(new_parent);
 	new_parent_kobj = get_device_parent(dev, new_parent);
 
-	pr_debug("device: '%s': %s: moving to '%s'\n", dev->bus_id,
-		 __func__, new_parent ? new_parent->bus_id : "<NULL>");
+	pr_debug("device: '%s': %s: moving to '%s'\n", dev_name(dev),
+		 __func__, new_parent ? dev_name(new_parent) : "<NULL>");
 	error = kobject_move(&dev->kobj, new_parent_kobj);
 	if (error) {
 		cleanup_glue_dir(dev, new_parent_kobj);
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 20febc00a52..17a8e45cf9c 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -34,7 +34,7 @@ static void driver_bound(struct device *dev)
 		return;
 	}
 
-	pr_debug("driver: '%s': %s: bound to device '%s'\n", dev->bus_id,
+	pr_debug("driver: '%s': %s: bound to device '%s'\n", dev_name(dev),
 		 __func__, dev->driver->name);
 
 	if (dev->bus)
@@ -104,13 +104,13 @@ static int really_probe(struct device *dev, struct device_driver *drv)
 
 	atomic_inc(&probe_count);
 	pr_debug("bus: '%s': %s: probing driver %s with device %s\n",
-		 drv->bus->name, __func__, drv->name, dev->bus_id);
+		 drv->bus->name, __func__, drv->name, dev_name(dev));
 	WARN_ON(!list_empty(&dev->devres_head));
 
 	dev->driver = drv;
 	if (driver_sysfs_add(dev)) {
 		printk(KERN_ERR "%s: driver_sysfs_add(%s) failed\n",
-			__func__, dev->bus_id);
+			__func__, dev_name(dev));
 		goto probe_failed;
 	}
 
@@ -127,7 +127,7 @@ static int really_probe(struct device *dev, struct device_driver *drv)
 	driver_bound(dev);
 	ret = 1;
 	pr_debug("bus: '%s': %s: bound device %s to driver %s\n",
-		 drv->bus->name, __func__, dev->bus_id, drv->name);
+		 drv->bus->name, __func__, dev_name(dev), drv->name);
 	goto done;
 
 probe_failed:
@@ -139,7 +139,7 @@ probe_failed:
 		/* driver matched but the probe failed */
 		printk(KERN_WARNING
 		       "%s: probe of %s failed with error %d\n",
-		       drv->name, dev->bus_id, ret);
+		       drv->name, dev_name(dev), ret);
 	}
 	/*
 	 * Ignore errors returned by ->probe so that the next driver can try
@@ -194,7 +194,7 @@ int driver_probe_device(struct device_driver *drv, struct device *dev)
 		goto done;
 
 	pr_debug("bus: '%s': %s: matched device %s with driver %s\n",
-		 drv->bus->name, __func__, dev->bus_id, drv->name);
+		 drv->bus->name, __func__, dev_name(dev), drv->name);
 
 	ret = really_probe(dev, drv);
 
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index b7e571031ec..44699d9dd85 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -291,12 +291,6 @@ firmware_class_timeout(u_long data)
 	fw_load_abort(fw_priv);
 }
 
-static inline void fw_setup_device_id(struct device *f_dev, struct device *dev)
-{
-	/* XXX warning we should watch out for name collisions */
-	strlcpy(f_dev->bus_id, dev->bus_id, BUS_ID_SIZE);
-}
-
 static int fw_register_device(struct device **dev_p, const char *fw_name,
 			      struct device *device)
 {
@@ -321,7 +315,7 @@ static int fw_register_device(struct device **dev_p, const char *fw_name,
 	fw_priv->timeout.data = (u_long) fw_priv;
 	init_timer(&fw_priv->timeout);
 
-	fw_setup_device_id(f_dev, device);
+	dev_set_name(f_dev, dev_name(device));
 	f_dev->parent = device;
 	f_dev->class = &firmware_class;
 	dev_set_drvdata(f_dev, fw_priv);
diff --git a/drivers/base/isa.c b/drivers/base/isa.c
index efd57757494..479694b6cbe 100644
--- a/drivers/base/isa.c
+++ b/drivers/base/isa.c
@@ -11,7 +11,7 @@
 #include <linux/isa.h>
 
 static struct device isa_bus = {
-	.bus_id		= "isa"
+	.init_name	= "isa"
 };
 
 struct isa_dev {
@@ -135,9 +135,8 @@ int isa_register_driver(struct isa_driver *isa_driver, unsigned int ndev)
 		isa_dev->dev.parent	= &isa_bus;
 		isa_dev->dev.bus	= &isa_bus_type;
 
-		snprintf(isa_dev->dev.bus_id, BUS_ID_SIZE, "%s.%u",
-				isa_driver->driver.name, id);
-
+		dev_set_name(&isa_dev->dev, "%s.%u",
+			     isa_driver->driver.name, id);
 		isa_dev->dev.platform_data	= isa_driver;
 		isa_dev->dev.release		= isa_dev_release;
 		isa_dev->id			= id;
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 6c743b6008d..349a1013603 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -24,7 +24,7 @@
 				 driver))
 
 struct device platform_bus = {
-	.bus_id		= "platform",
+	.init_name	= "platform",
 };
 EXPORT_SYMBOL_GPL(platform_bus);
 
@@ -242,16 +242,15 @@ int platform_device_add(struct platform_device *pdev)
 	pdev->dev.bus = &platform_bus_type;
 
 	if (pdev->id != -1)
-		snprintf(pdev->dev.bus_id, BUS_ID_SIZE, "%s.%d", pdev->name,
-			 pdev->id);
+		dev_set_name(&pdev->dev, "%s.%d", pdev->name,  pdev->id);
 	else
-		strlcpy(pdev->dev.bus_id, pdev->name, BUS_ID_SIZE);
+		dev_set_name(&pdev->dev, pdev->name);
 
 	for (i = 0; i < pdev->num_resources; i++) {
 		struct resource *p, *r = &pdev->resource[i];
 
 		if (r->name == NULL)
-			r->name = pdev->dev.bus_id;
+			r->name = dev_name(&pdev->dev);
 
 		p = r->parent;
 		if (!p) {
@@ -264,14 +263,14 @@ int platform_device_add(struct platform_device *pdev)
 		if (p && insert_resource(p, r)) {
 			printk(KERN_ERR
 			       "%s: failed to claim resource %d\n",
-			       pdev->dev.bus_id, i);
+			       dev_name(&pdev->dev), i);
 			ret = -EBUSY;
 			goto failed;
 		}
 	}
 
 	pr_debug("Registering platform device '%s'. Parent at %s\n",
-		 pdev->dev.bus_id, pdev->dev.parent->bus_id);
+		 dev_name(&pdev->dev), dev_name(pdev->dev.parent));
 
 	ret = device_add(&pdev->dev);
 	if (ret == 0)
@@ -607,7 +606,7 @@ static int platform_match(struct device *dev, struct device_driver *drv)
 	struct platform_device *pdev;
 
 	pdev = container_of(dev, struct platform_device, dev);
-	return (strncmp(pdev->name, drv->name, BUS_ID_SIZE) == 0);
+	return (strcmp(pdev->name, drv->name) == 0);
 }
 
 #ifdef CONFIG_PM_SLEEP
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index a8e4dcbcaf7..670c9d6c140 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -76,7 +76,7 @@ void device_pm_add(struct device *dev)
 	if (dev->parent) {
 		if (dev->parent->power.status >= DPM_SUSPENDING)
 			dev_warn(dev, "parent %s should not be sleeping\n",
-				dev->parent->bus_id);
+				 dev_name(dev->parent));
 	} else if (transition_started) {
 		/*
 		 * We refuse to register parentless devices while a PM
diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
index 2aa6e8fc4de..0a1a2c4dbc6 100644
--- a/drivers/base/power/trace.c
+++ b/drivers/base/power/trace.c
@@ -140,7 +140,7 @@ static unsigned int hash_string(unsigned int seed, const char *data, unsigned in
 
 void set_trace_device(struct device *dev)
 {
-	dev_hash_value = hash_string(DEVSEED, dev->bus_id, DEVHASH);
+	dev_hash_value = hash_string(DEVSEED, dev_name(dev), DEVHASH);
 }
 EXPORT_SYMBOL(set_trace_device);
 
@@ -192,7 +192,7 @@ static int show_dev_hash(unsigned int value)
 
 	while (entry != &dpm_list) {
 		struct device * dev = to_device(entry);
-		unsigned int hash = hash_string(DEVSEED, dev->bus_id, DEVHASH);
+		unsigned int hash = hash_string(DEVSEED, dev_name(dev), DEVHASH);
 		if (hash == value) {
 			dev_info(dev, "hash matches\n");
 			match++;

From fce3e804cfad49208fd2ff9db4bcb57481409e1d Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Sat, 1 Nov 2008 14:03:00 +0100
Subject: [PATCH 06/60] sysfs: clarify SYSFS_DEPRECATED help text

This should make the help text of SYSFS_DEPRECATED more clear, that this
is _not_ about (what some people think it is) suppressing a few symlinks
and variables, but a different sysfs _layout_ with new features.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 init/Kconfig | 40 +++++++++++++++++++++++++---------------
 1 file changed, 25 insertions(+), 15 deletions(-)

diff --git a/init/Kconfig b/init/Kconfig
index 52847eec739..d9d3dbabdb1 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -423,27 +423,37 @@ config SYSFS_DEPRECATED
 	bool
 
 config SYSFS_DEPRECATED_V2
-	bool "Create deprecated sysfs files"
+	bool "Create deprecated sysfs layout for older userspace tools"
 	depends on SYSFS
 	default y
 	select SYSFS_DEPRECATED
 	help
-	  This option creates deprecated symlinks such as the
-	  "device"-link, the <subsystem>:<name>-link, and the
-	  "bus"-link. It may also add deprecated key in the
-	  uevent environment.
-	  None of these features or values should be used today, as
-	  they export driver core implementation details to userspace
-	  or export properties which can't be kept stable across kernel
-	  releases.
+	  This option switches the layout of sysfs to the deprecated
+	  version.
 
-	  If enabled, this option will also move any device structures
-	  that belong to a class, back into the /sys/class hierarchy, in
-	  order to support older versions of udev and some userspace
-	  programs.
+	  The current sysfs layout features a unified device tree at
+	  /sys/devices/, which is able to express a hierarchy between
+	  class devices. If the deprecated option is set to Y, the
+	  unified device tree is split into a bus device tree at
+	  /sys/devices/ and several individual class device trees at
+	  /sys/class/. The class and bus devices will be connected by
+	  "<subsystem>:<name>" and the "device" links. The "block"
+	  class devices, will not show up in /sys/class/block/. Some
+	  subsystems will suppress the creation of some devices which
+	  depend on the unified device tree.
 
-	  If you are using a distro with the most recent userspace
-	  packages, it should be safe to say N here.
+	  This option is not a pure compatibility option that can
+	  be safely enabled on newer distributions. It will change the
+	  layout of sysfs to the non-extensible deprecated version,
+	  and disable some features, which can not be exported without
+	  confusing older userspace tools. Since 2007/2008 all major
+	  distributions do not enable this option, and ship no tools which
+	  depend on the deprecated layout or this option.
+
+	  If you are using a new kernel on an older distribution, or use
+	  older userspace tools, you might need to say Y here. Do not say Y,
+	  if the original kernel, that came with your distribution, has
+	  this option set to N.
 
 config PROC_PID_CPUSET
 	bool "Include legacy /proc/<pid>/cpuset file"

From c65b9145f40da99cad000f81823265dc70e5fcf9 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Thu, 13 Nov 2008 13:20:00 +0900
Subject: [PATCH 07/60] uevent: don't pass envp_ext[] as format string in
 kobject_uevent_env()

kobject_uevent_env() uses envp_ext[] as verbatim format string which
can cause problems ranging from unexpectedly mangled string to oops if
a string in envp_ext[] contains substring which can be interpreted as
format.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 lib/kobject_uevent.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 3f914725bda..ca215bc2329 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -165,7 +165,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 	/* keys passed in from the caller */
 	if (envp_ext) {
 		for (i = 0; envp_ext[i]; i++) {
-			retval = add_uevent_var(env, envp_ext[i]);
+			retval = add_uevent_var(env, "%s", envp_ext[i]);
 			if (retval)
 				goto exit;
 		}

From e0d7bf5d580c20ff14d0200b6ab47bc77f99b152 Mon Sep 17 00:00:00 2001
From: Ming Lei <tom.leiming@gmail.com>
Date: Sun, 16 Nov 2008 18:23:27 +0800
Subject: [PATCH 08/60] kobject: return the result of uevent sending by netlink

We need to return the result of uevent sending by netlink
to caller, when uevent_helper is disabled and CONFIG_NET
is defined.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 lib/kobject_uevent.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index ca215bc2329..318328ddbd1 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -225,8 +225,10 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 			}
 
 			NETLINK_CB(skb).dst_group = 1;
-			netlink_broadcast(uevent_sock, skb, 0, 1, GFP_KERNEL);
-		}
+			retval = netlink_broadcast(uevent_sock, skb, 0, 1,
+						   GFP_KERNEL);
+		} else
+			retval = -ENOMEM;
 	}
 #endif
 

From cd3772e6898c6386f21d2958346d6dd57d4204f5 Mon Sep 17 00:00:00 2001
From: Ming Lei <tom.leiming@gmail.com>
Date: Sun, 16 Nov 2008 18:22:09 +0800
Subject: [PATCH 09/60] kernel/ksysfs.c:fix dependence on CONFIG_NET

Access to uevent_seqnum and uevent_helper does not need to
depend on CONFIG_NET, so remove it.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 kernel/ksysfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index 08dd8ed86c7..528dd78e7e7 100644
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -24,7 +24,7 @@ static struct kobj_attribute _name##_attr = __ATTR_RO(_name)
 static struct kobj_attribute _name##_attr = \
 	__ATTR(_name, 0644, _name##_show, _name##_store)
 
-#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
+#if defined(CONFIG_HOTPLUG)
 /* current uevent sequence number */
 static ssize_t uevent_seqnum_show(struct kobject *kobj,
 				  struct kobj_attribute *attr, char *buf)
@@ -137,7 +137,7 @@ struct kobject *kernel_kobj;
 EXPORT_SYMBOL_GPL(kernel_kobj);
 
 static struct attribute * kernel_attrs[] = {
-#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
+#if defined(CONFIG_HOTPLUG)
 	&uevent_seqnum_attr.attr,
 	&uevent_helper_attr.attr,
 #endif

From 355a72d75b3b4f4877db4c9070c798238028ecb5 Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rjw@sisk.pl>
Date: Mon, 8 Dec 2008 00:34:57 +0100
Subject: [PATCH 10/60] PCI: Rework default handling of suspend and resume

Rework the handling of suspend and resume of PCI devices which have
no drivers or the drivers of which do not provide any suspend-resume
callbacks in such a way that their standard PCI configuration
registers will be saved and restored with interrupts disabled.  This
should prevent such devices, including PCI bridges, from being
resumed too late to be able to function correctly during the resume
of the other PCI devices that may depend on them.

Also, to remove one possible source of future confusion, drop the
default handling of suspend and resume for PCI devices with drivers
providing the 'pm' object introduced by the new suspend-resume
framework (there are no such PCI drivers at the moment).

This patch addresses the regression from 2.6.26 tracked as
http://bugzilla.kernel.org/show_bug.cgi?id=12121 .

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/pci/pci-driver.c | 94 +++++++++++++++++++++++++++-------------
 1 file changed, 63 insertions(+), 31 deletions(-)

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 4042d211c3e..99d867bcf22 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -300,6 +300,14 @@ static void pci_device_shutdown(struct device *dev)
 
 #ifdef CONFIG_PM_SLEEP
 
+static bool pci_has_legacy_pm_support(struct pci_dev *pci_dev)
+{
+	struct pci_driver *drv = pci_dev->driver;
+
+	return drv && (drv->suspend || drv->suspend_late || drv->resume
+		|| drv->resume_early);
+}
+
 /*
  * Default "suspend" method for devices that have no driver provided suspend,
  * or not even a driver at all.
@@ -317,14 +325,22 @@ static void pci_default_pm_suspend(struct pci_dev *pci_dev)
 
 /*
  * Default "resume" method for devices that have no driver provided resume,
- * or not even a driver at all.
+ * or not even a driver at all (first part).
  */
-static int pci_default_pm_resume(struct pci_dev *pci_dev)
+static void pci_default_pm_resume_early(struct pci_dev *pci_dev)
 {
-	int retval = 0;
-
 	/* restore the PCI config space */
 	pci_restore_state(pci_dev);
+}
+
+/*
+ * Default "resume" method for devices that have no driver provided resume,
+ * or not even a driver at all (second part).
+ */
+static int pci_default_pm_resume_late(struct pci_dev *pci_dev)
+{
+	int retval;
+
 	/* if the device was enabled before suspend, reenable */
 	retval = pci_reenable_device(pci_dev);
 	/*
@@ -371,10 +387,12 @@ static int pci_legacy_resume(struct device *dev)
 	struct pci_dev * pci_dev = to_pci_dev(dev);
 	struct pci_driver * drv = pci_dev->driver;
 
-	if (drv && drv->resume)
+	if (drv && drv->resume) {
 		error = drv->resume(pci_dev);
-	else
-		error = pci_default_pm_resume(pci_dev);
+	} else {
+		pci_default_pm_resume_early(pci_dev);
+		error = pci_default_pm_resume_late(pci_dev);
+	}
 	return error;
 }
 
@@ -420,10 +438,8 @@ static int pci_pm_suspend(struct device *dev)
 		if (drv->pm->suspend) {
 			error = drv->pm->suspend(dev);
 			suspend_report_result(drv->pm->suspend, error);
-		} else {
-			pci_default_pm_suspend(pci_dev);
 		}
-	} else {
+	} else if (pci_has_legacy_pm_support(pci_dev)) {
 		error = pci_legacy_suspend(dev, PMSG_SUSPEND);
 	}
 	pci_fixup_device(pci_fixup_suspend, pci_dev);
@@ -433,6 +449,7 @@ static int pci_pm_suspend(struct device *dev)
 
 static int pci_pm_suspend_noirq(struct device *dev)
 {
+	struct pci_dev *pci_dev = to_pci_dev(dev);
 	struct device_driver *drv = dev->driver;
 	int error = 0;
 
@@ -441,8 +458,10 @@ static int pci_pm_suspend_noirq(struct device *dev)
 			error = drv->pm->suspend_noirq(dev);
 			suspend_report_result(drv->pm->suspend_noirq, error);
 		}
-	} else {
+	} else if (pci_has_legacy_pm_support(pci_dev)) {
 		error = pci_legacy_suspend_late(dev, PMSG_SUSPEND);
+	} else {
+		pci_default_pm_suspend(pci_dev);
 	}
 
 	return error;
@@ -452,15 +471,17 @@ static int pci_pm_resume(struct device *dev)
 {
 	struct pci_dev *pci_dev = to_pci_dev(dev);
 	struct device_driver *drv = dev->driver;
-	int error;
+	int error = 0;
 
 	pci_fixup_device(pci_fixup_resume, pci_dev);
 
 	if (drv && drv->pm) {
-		error = drv->pm->resume ? drv->pm->resume(dev) :
-			pci_default_pm_resume(pci_dev);
-	} else {
+		if (drv->pm->resume)
+			error = drv->pm->resume(dev);
+	} else if (pci_has_legacy_pm_support(pci_dev)) {
 		error = pci_legacy_resume(dev);
+	} else {
+		error = pci_default_pm_resume_late(pci_dev);
 	}
 
 	return error;
@@ -468,6 +489,7 @@ static int pci_pm_resume(struct device *dev)
 
 static int pci_pm_resume_noirq(struct device *dev)
 {
+	struct pci_dev *pci_dev = to_pci_dev(dev);
 	struct device_driver *drv = dev->driver;
 	int error = 0;
 
@@ -476,8 +498,10 @@ static int pci_pm_resume_noirq(struct device *dev)
 	if (drv && drv->pm) {
 		if (drv->pm->resume_noirq)
 			error = drv->pm->resume_noirq(dev);
-	} else {
+	} else if (pci_has_legacy_pm_support(pci_dev)) {
 		error = pci_legacy_resume_early(dev);
+	} else {
+		pci_default_pm_resume_early(pci_dev);
 	}
 
 	return error;
@@ -504,10 +528,8 @@ static int pci_pm_freeze(struct device *dev)
 		if (drv->pm->freeze) {
 			error = drv->pm->freeze(dev);
 			suspend_report_result(drv->pm->freeze, error);
-		} else {
-			pci_default_pm_suspend(pci_dev);
 		}
-	} else {
+	} else if (pci_has_legacy_pm_support(pci_dev)) {
 		error = pci_legacy_suspend(dev, PMSG_FREEZE);
 		pci_fixup_device(pci_fixup_suspend, pci_dev);
 	}
@@ -517,6 +539,7 @@ static int pci_pm_freeze(struct device *dev)
 
 static int pci_pm_freeze_noirq(struct device *dev)
 {
+	struct pci_dev *pci_dev = to_pci_dev(dev);
 	struct device_driver *drv = dev->driver;
 	int error = 0;
 
@@ -525,8 +548,10 @@ static int pci_pm_freeze_noirq(struct device *dev)
 			error = drv->pm->freeze_noirq(dev);
 			suspend_report_result(drv->pm->freeze_noirq, error);
 		}
-	} else {
+	} else if (pci_has_legacy_pm_support(pci_dev)) {
 		error = pci_legacy_suspend_late(dev, PMSG_FREEZE);
+	} else {
+		pci_default_pm_suspend(pci_dev);
 	}
 
 	return error;
@@ -534,14 +559,15 @@ static int pci_pm_freeze_noirq(struct device *dev)
 
 static int pci_pm_thaw(struct device *dev)
 {
+	struct pci_dev *pci_dev = to_pci_dev(dev);
 	struct device_driver *drv = dev->driver;
 	int error = 0;
 
 	if (drv && drv->pm) {
 		if (drv->pm->thaw)
 			error =  drv->pm->thaw(dev);
-	} else {
-		pci_fixup_device(pci_fixup_resume, to_pci_dev(dev));
+	} else if (pci_has_legacy_pm_support(pci_dev)) {
+		pci_fixup_device(pci_fixup_resume, pci_dev);
 		error = pci_legacy_resume(dev);
 	}
 
@@ -550,13 +576,14 @@ static int pci_pm_thaw(struct device *dev)
 
 static int pci_pm_thaw_noirq(struct device *dev)
 {
+	struct pci_dev *pci_dev = to_pci_dev(dev);
 	struct device_driver *drv = dev->driver;
 	int error = 0;
 
 	if (drv && drv->pm) {
 		if (drv->pm->thaw_noirq)
 			error = drv->pm->thaw_noirq(dev);
-	} else {
+	} else if (pci_has_legacy_pm_support(pci_dev)) {
 		pci_fixup_device(pci_fixup_resume_early, to_pci_dev(dev));
 		error = pci_legacy_resume_early(dev);
 	}
@@ -566,17 +593,18 @@ static int pci_pm_thaw_noirq(struct device *dev)
 
 static int pci_pm_poweroff(struct device *dev)
 {
+	struct pci_dev *pci_dev = to_pci_dev(dev);
 	struct device_driver *drv = dev->driver;
 	int error = 0;
 
-	pci_fixup_device(pci_fixup_suspend, to_pci_dev(dev));
+	pci_fixup_device(pci_fixup_suspend, pci_dev);
 
 	if (drv && drv->pm) {
 		if (drv->pm->poweroff) {
 			error = drv->pm->poweroff(dev);
 			suspend_report_result(drv->pm->poweroff, error);
 		}
-	} else {
+	} else if (pci_has_legacy_pm_support(pci_dev)) {
 		error = pci_legacy_suspend(dev, PMSG_HIBERNATE);
 	}
 
@@ -593,7 +621,7 @@ static int pci_pm_poweroff_noirq(struct device *dev)
 			error = drv->pm->poweroff_noirq(dev);
 			suspend_report_result(drv->pm->poweroff_noirq, error);
 		}
-	} else {
+	} else if (pci_has_legacy_pm_support(to_pci_dev(dev))) {
 		error = pci_legacy_suspend_late(dev, PMSG_HIBERNATE);
 	}
 
@@ -604,13 +632,15 @@ static int pci_pm_restore(struct device *dev)
 {
 	struct pci_dev *pci_dev = to_pci_dev(dev);
 	struct device_driver *drv = dev->driver;
-	int error;
+	int error = 0;
 
 	if (drv && drv->pm) {
-		error = drv->pm->restore ? drv->pm->restore(dev) :
-			pci_default_pm_resume(pci_dev);
-	} else {
+		if (drv->pm->restore)
+			error = drv->pm->restore(dev);
+	} else if (pci_has_legacy_pm_support(pci_dev)) {
 		error = pci_legacy_resume(dev);
+	} else {
+		error = pci_default_pm_resume_late(pci_dev);
 	}
 	pci_fixup_device(pci_fixup_resume, pci_dev);
 
@@ -628,8 +658,10 @@ static int pci_pm_restore_noirq(struct device *dev)
 	if (drv && drv->pm) {
 		if (drv->pm->restore_noirq)
 			error = drv->pm->restore_noirq(dev);
-	} else {
+	} else if (pci_has_legacy_pm_support(pci_dev)) {
 		error = pci_legacy_resume_early(dev);
+	} else {
+		pci_default_pm_resume_early(pci_dev);
 	}
 	pci_fixup_device(pci_fixup_resume_early, pci_dev);
 

From 0732b49c8c40c56033cff8986dbad55aa54a5d40 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Tue, 9 Dec 2008 08:32:14 +1030
Subject: [PATCH 11/60] kobject: Make Documentation/kobject.txt a little more
 coherent.

While reading Documentation/kobject.txt:

  Note kobject_rename does perform any locking or have a solid notion of
  what names are valid so the provide must provide their own sanity checking
  and serialization.

I expect better: You never see me hard with time word making sentence
coherent stuff.  Ever.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 Documentation/kobject.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/kobject.txt b/Documentation/kobject.txt
index f5d2aad65a6..b2e374586bd 100644
--- a/Documentation/kobject.txt
+++ b/Documentation/kobject.txt
@@ -118,8 +118,8 @@ the name of the kobject, call kobject_rename():
 
     int kobject_rename(struct kobject *kobj, const char *new_name);
 
-Note kobject_rename does perform any locking or have a solid notion of
-what names are valid so the provide must provide their own sanity checking
+kobject_rename does not perform any locking or have a solid notion of
+what names are valid so the caller must provide their own sanity checking
 and serialization.
 
 There is a function called kobject_set_name() but that is legacy cruft and

From 2e5ba26a483218b51b7b327fb235b348890aea15 Mon Sep 17 00:00:00 2001
From: Wu Fengguang <fengguang.wu@intel.com>
Date: Thu, 11 Dec 2008 07:43:17 +0800
Subject: [PATCH 12/60] dynamic_printk: reduce one level of indentation

Cleanup pr_debug_write() to reduce one level of indentation.

Cc: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 lib/dynamic_printk.c | 58 ++++++++++++++++++++------------------------
 1 file changed, 26 insertions(+), 32 deletions(-)

diff --git a/lib/dynamic_printk.c b/lib/dynamic_printk.c
index 8e30295e856..165a19763dc 100644
--- a/lib/dynamic_printk.c
+++ b/lib/dynamic_printk.c
@@ -277,40 +277,34 @@ static ssize_t pr_debug_write(struct file *file, const char __user *buf,
 				dynamic_enabled = DYNAMIC_ENABLED_NONE;
 			}
 			err = 0;
-		} else {
-			if (elem) {
-				if (value && (elem->enable == 0)) {
-					dynamic_printk_enabled |=
-							(1LL << elem->hash1);
-					dynamic_printk_enabled2 |=
-							(1LL << elem->hash2);
-					elem->enable = 1;
-					num_enabled++;
-					dynamic_enabled = DYNAMIC_ENABLED_SOME;
-					err = 0;
-					printk(KERN_DEBUG
-					       "debugging enabled for module %s\n",
-					       elem->name);
-				} else if (!value && (elem->enable == 1)) {
-					elem->enable = 0;
-					num_enabled--;
-					if (disabled_hash(elem->hash1, true))
-						dynamic_printk_enabled &=
+		} else if (elem) {
+			if (value && (elem->enable == 0)) {
+				dynamic_printk_enabled |= (1LL << elem->hash1);
+				dynamic_printk_enabled2 |= (1LL << elem->hash2);
+				elem->enable = 1;
+				num_enabled++;
+				dynamic_enabled = DYNAMIC_ENABLED_SOME;
+				err = 0;
+				printk(KERN_DEBUG
+					"debugging enabled for module %s\n",
+					elem->name);
+			} else if (!value && (elem->enable == 1)) {
+				elem->enable = 0;
+				num_enabled--;
+				if (disabled_hash(elem->hash1, true))
+					dynamic_printk_enabled &=
 							~(1LL << elem->hash1);
-					if (disabled_hash(elem->hash2, false))
-						dynamic_printk_enabled2 &=
+				if (disabled_hash(elem->hash2, false))
+					dynamic_printk_enabled2 &=
 							~(1LL << elem->hash2);
-					if (num_enabled)
-						dynamic_enabled =
-							DYNAMIC_ENABLED_SOME;
-					else
-						dynamic_enabled =
-							DYNAMIC_ENABLED_NONE;
-					err = 0;
-					printk(KERN_DEBUG
-					       "debugging disabled for module "
-					       "%s\n", elem->name);
-				}
+				if (num_enabled)
+					dynamic_enabled = DYNAMIC_ENABLED_SOME;
+				else
+					dynamic_enabled = DYNAMIC_ENABLED_NONE;
+				err = 0;
+				printk(KERN_DEBUG
+					"debugging disabled for module %s\n",
+					elem->name);
 			}
 		}
 	}

From 2831fe6f9cc4e16c103504ee09a47a084297c0f3 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Tue, 16 Dec 2008 12:23:36 -0800
Subject: [PATCH 13/60] driver core: create a private portion of struct device

This is to be used to move things out of struct device that no code
outside of the driver core should ever touch.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/base/base.h    | 12 ++++++++++++
 drivers/base/core.c    |  8 ++++++++
 include/linux/device.h |  3 +++
 3 files changed, 23 insertions(+)

diff --git a/drivers/base/base.h b/drivers/base/base.h
index 0a5f055dffb..6b20809b5fd 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -63,6 +63,18 @@ struct class_private {
 #define to_class(obj)	\
 	container_of(obj, struct class_private, class_subsys.kobj)
 
+/**
+ * struct device_private - structure to hold the private to the driver core portions of the device structure.
+ *
+ * @device - pointer back to the struct class that this structure is
+ * associated with.
+ *
+ * Nothing outside of the driver core should ever touch these fields.
+ */
+struct device_private {
+	struct device *device;
+};
+
 /* initialisation functions */
 extern int devices_init(void);
 extern int buses_init(void);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 14aa2b6953c..6657787e64f 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -109,6 +109,7 @@ static struct sysfs_ops dev_sysfs_ops = {
 static void device_release(struct kobject *kobj)
 {
 	struct device *dev = to_dev(kobj);
+	struct device_private *p = dev->p;
 
 	if (dev->release)
 		dev->release(dev);
@@ -120,6 +121,7 @@ static void device_release(struct kobject *kobj)
 		WARN(1, KERN_ERR "Device '%s' does not have a release() "
 			"function, it is broken and must be fixed.\n",
 			dev_name(dev));
+	kfree(p);
 }
 
 static struct kobj_type device_ktype = {
@@ -536,6 +538,12 @@ static void klist_children_put(struct klist_node *n)
  */
 void device_initialize(struct device *dev)
 {
+	dev->p = kzalloc(sizeof(*dev->p), GFP_KERNEL);
+	if (!dev->p) {
+		WARN_ON(1);
+		return;
+	}
+	dev->p->device = dev;
 	dev->kobj.kset = devices_kset;
 	kobject_init(&dev->kobj, &device_ktype);
 	klist_init(&dev->klist_children, klist_children_get,
diff --git a/include/linux/device.h b/include/linux/device.h
index 4e14fad4143..d6d34084fd3 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -28,6 +28,7 @@
 #define BUS_ID_SIZE		20
 
 struct device;
+struct device_private;
 struct device_driver;
 struct driver_private;
 struct class;
@@ -371,6 +372,8 @@ struct device {
 	struct klist_node	knode_bus;
 	struct device		*parent;
 
+	struct device_private	*p;
+
 	struct kobject kobj;
 	char	bus_id[BUS_ID_SIZE];	/* position on parent bus */
 	unsigned		uevent_suppress:1;

From 11c3b5c3e08f4d855cbef52883c266b9ab9df879 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Tue, 16 Dec 2008 12:24:56 -0800
Subject: [PATCH 14/60] driver core: move klist_children into private structure

Nothing outside of the driver core should ever touch klist_children, or
knode_parent, so move them out of the public eye.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/base/base.h    |  6 ++++++
 drivers/base/core.c    | 37 ++++++++++++++++++++++++-------------
 include/linux/device.h |  2 --
 3 files changed, 30 insertions(+), 15 deletions(-)

diff --git a/drivers/base/base.h b/drivers/base/base.h
index 6b20809b5fd..f5cf31c664d 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -66,14 +66,20 @@ struct class_private {
 /**
  * struct device_private - structure to hold the private to the driver core portions of the device structure.
  *
+ * @klist_children - klist containing all children of this device
+ * @knode_parent - node in sibling list
  * @device - pointer back to the struct class that this structure is
  * associated with.
  *
  * Nothing outside of the driver core should ever touch these fields.
  */
 struct device_private {
+	struct klist klist_children;
+	struct klist_node knode_parent;
 	struct device *device;
 };
+#define to_device_private_parent(obj)	\
+	container_of(obj, struct device_private, knode_parent)
 
 /* initialisation functions */
 extern int devices_init(void);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 6657787e64f..180ff84ea26 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -509,14 +509,16 @@ EXPORT_SYMBOL_GPL(device_schedule_callback_owner);
 
 static void klist_children_get(struct klist_node *n)
 {
-	struct device *dev = container_of(n, struct device, knode_parent);
+	struct device_private *p = to_device_private_parent(n);
+	struct device *dev = p->device;
 
 	get_device(dev);
 }
 
 static void klist_children_put(struct klist_node *n)
 {
-	struct device *dev = container_of(n, struct device, knode_parent);
+	struct device_private *p = to_device_private_parent(n);
+	struct device *dev = p->device;
 
 	put_device(dev);
 }
@@ -546,7 +548,7 @@ void device_initialize(struct device *dev)
 	dev->p->device = dev;
 	dev->kobj.kset = devices_kset;
 	kobject_init(&dev->kobj, &device_ktype);
-	klist_init(&dev->klist_children, klist_children_get,
+	klist_init(&dev->p->klist_children, klist_children_get,
 		   klist_children_put);
 	INIT_LIST_HEAD(&dev->dma_pools);
 	init_MUTEX(&dev->sem);
@@ -927,7 +929,8 @@ int device_add(struct device *dev)
 	kobject_uevent(&dev->kobj, KOBJ_ADD);
 	bus_attach_device(dev);
 	if (parent)
-		klist_add_tail(&dev->knode_parent, &parent->klist_children);
+		klist_add_tail(&dev->p->knode_parent,
+			       &parent->p->klist_children);
 
 	if (dev->class) {
 		mutex_lock(&dev->class->p->class_mutex);
@@ -1038,7 +1041,7 @@ void device_del(struct device *dev)
 	device_pm_remove(dev);
 	dpm_sysfs_remove(dev);
 	if (parent)
-		klist_del(&dev->knode_parent);
+		klist_del(&dev->p->knode_parent);
 	if (MAJOR(dev->devt)) {
 		device_remove_sys_dev_entry(dev);
 		device_remove_file(dev, &devt_attr);
@@ -1102,7 +1105,14 @@ void device_unregister(struct device *dev)
 static struct device *next_device(struct klist_iter *i)
 {
 	struct klist_node *n = klist_next(i);
-	return n ? container_of(n, struct device, knode_parent) : NULL;
+	struct device *dev = NULL;
+	struct device_private *p;
+
+	if (n) {
+		p = to_device_private_parent(n);
+		dev = p->device;
+	}
+	return dev;
 }
 
 /**
@@ -1124,7 +1134,7 @@ int device_for_each_child(struct device *parent, void *data,
 	struct device *child;
 	int error = 0;
 
-	klist_iter_init(&parent->klist_children, &i);
+	klist_iter_init(&parent->p->klist_children, &i);
 	while ((child = next_device(&i)) && !error)
 		error = fn(child, data);
 	klist_iter_exit(&i);
@@ -1155,7 +1165,7 @@ struct device *device_find_child(struct device *parent, void *data,
 	if (!parent)
 		return NULL;
 
-	klist_iter_init(&parent->klist_children, &i);
+	klist_iter_init(&parent->p->klist_children, &i);
 	while ((child = next_device(&i)))
 		if (match(child, data) && get_device(child))
 			break;
@@ -1478,9 +1488,10 @@ int device_move(struct device *dev, struct device *new_parent)
 	old_parent = dev->parent;
 	dev->parent = new_parent;
 	if (old_parent)
-		klist_remove(&dev->knode_parent);
+		klist_remove(&dev->p->knode_parent);
 	if (new_parent) {
-		klist_add_tail(&dev->knode_parent, &new_parent->klist_children);
+		klist_add_tail(&dev->p->knode_parent,
+			       &new_parent->p->klist_children);
 		set_dev_node(dev, dev_to_node(new_parent));
 	}
 
@@ -1492,11 +1503,11 @@ int device_move(struct device *dev, struct device *new_parent)
 		device_move_class_links(dev, new_parent, old_parent);
 		if (!kobject_move(&dev->kobj, &old_parent->kobj)) {
 			if (new_parent)
-				klist_remove(&dev->knode_parent);
+				klist_remove(&dev->p->knode_parent);
 			dev->parent = old_parent;
 			if (old_parent) {
-				klist_add_tail(&dev->knode_parent,
-					       &old_parent->klist_children);
+				klist_add_tail(&dev->p->knode_parent,
+					       &old_parent->p->klist_children);
 				set_dev_node(dev, dev_to_node(old_parent));
 			}
 		}
diff --git a/include/linux/device.h b/include/linux/device.h
index d6d34084fd3..60423e68720 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -366,8 +366,6 @@ struct device_dma_parameters {
 };
 
 struct device {
-	struct klist		klist_children;
-	struct klist_node	knode_parent;	/* node in sibling list */
 	struct klist_node	knode_driver;
 	struct klist_node	knode_bus;
 	struct device		*parent;

From 93e746db183b3bdbbda67900f79b5835f9cb388f Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Tue, 16 Dec 2008 12:25:49 -0800
Subject: [PATCH 15/60] driver core: move knode_driver into private structure

Nothing outside of the driver core should ever touch knode_driver, so
move it out of the public eye.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/base/base.h    |  4 ++++
 drivers/base/dd.c      | 13 ++++++++-----
 drivers/base/driver.c  | 13 ++++++++++---
 include/linux/device.h |  1 -
 4 files changed, 22 insertions(+), 9 deletions(-)

diff --git a/drivers/base/base.h b/drivers/base/base.h
index f5cf31c664d..8af0bb2c0aa 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -68,6 +68,7 @@ struct class_private {
  *
  * @klist_children - klist containing all children of this device
  * @knode_parent - node in sibling list
+ * @knode_driver - node in driver list
  * @device - pointer back to the struct class that this structure is
  * associated with.
  *
@@ -76,10 +77,13 @@ struct class_private {
 struct device_private {
 	struct klist klist_children;
 	struct klist_node knode_parent;
+	struct klist_node knode_driver;
 	struct device *device;
 };
 #define to_device_private_parent(obj)	\
 	container_of(obj, struct device_private, knode_parent)
+#define to_device_private_driver(obj)	\
+	container_of(obj, struct device_private, knode_driver)
 
 /* initialisation functions */
 extern int devices_init(void);
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 17a8e45cf9c..bb5f1eb83c0 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -28,7 +28,7 @@
 
 static void driver_bound(struct device *dev)
 {
-	if (klist_node_attached(&dev->knode_driver)) {
+	if (klist_node_attached(&dev->p->knode_driver)) {
 		printk(KERN_WARNING "%s: device %s already bound\n",
 			__func__, kobject_name(&dev->kobj));
 		return;
@@ -41,7 +41,7 @@ static void driver_bound(struct device *dev)
 		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
 					     BUS_NOTIFY_BOUND_DRIVER, dev);
 
-	klist_add_tail(&dev->knode_driver, &dev->driver->p->klist_devices);
+	klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices);
 }
 
 static int driver_sysfs_add(struct device *dev)
@@ -311,7 +311,7 @@ static void __device_release_driver(struct device *dev)
 			drv->remove(dev);
 		devres_release_all(dev);
 		dev->driver = NULL;
-		klist_remove(&dev->knode_driver);
+		klist_remove(&dev->p->knode_driver);
 	}
 }
 
@@ -341,6 +341,7 @@ EXPORT_SYMBOL_GPL(device_release_driver);
  */
 void driver_detach(struct device_driver *drv)
 {
+	struct device_private *dev_prv;
 	struct device *dev;
 
 	for (;;) {
@@ -349,8 +350,10 @@ void driver_detach(struct device_driver *drv)
 			spin_unlock(&drv->p->klist_devices.k_lock);
 			break;
 		}
-		dev = list_entry(drv->p->klist_devices.k_list.prev,
-				struct device, knode_driver.n_node);
+		dev_prv = list_entry(drv->p->klist_devices.k_list.prev,
+				     struct device_private,
+				     knode_driver.n_node);
+		dev = dev_prv->device;
 		get_device(dev);
 		spin_unlock(&drv->p->klist_devices.k_lock);
 
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 1e2bda780e4..b76cc69f110 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -19,7 +19,14 @@
 static struct device *next_device(struct klist_iter *i)
 {
 	struct klist_node *n = klist_next(i);
-	return n ? container_of(n, struct device, knode_driver) : NULL;
+	struct device *dev = NULL;
+	struct device_private *dev_prv;
+
+	if (n) {
+		dev_prv = to_device_private_driver(n);
+		dev = dev_prv->device;
+	}
+	return dev;
 }
 
 /**
@@ -42,7 +49,7 @@ int driver_for_each_device(struct device_driver *drv, struct device *start,
 		return -EINVAL;
 
 	klist_iter_init_node(&drv->p->klist_devices, &i,
-			     start ? &start->knode_driver : NULL);
+			     start ? &start->p->knode_driver : NULL);
 	while ((dev = next_device(&i)) && !error)
 		error = fn(dev, data);
 	klist_iter_exit(&i);
@@ -76,7 +83,7 @@ struct device *driver_find_device(struct device_driver *drv,
 		return NULL;
 
 	klist_iter_init_node(&drv->p->klist_devices, &i,
-			     (start ? &start->knode_driver : NULL));
+			     (start ? &start->p->knode_driver : NULL));
 	while ((dev = next_device(&i)))
 		if (match(dev, data) && get_device(dev))
 			break;
diff --git a/include/linux/device.h b/include/linux/device.h
index 60423e68720..e3630222c3c 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -366,7 +366,6 @@ struct device_dma_parameters {
 };
 
 struct device {
-	struct klist_node	knode_driver;
 	struct klist_node	knode_bus;
 	struct device		*parent;
 

From b9daa99ee533578e3f88231e7a16784dcb44ec42 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@suse.de>
Date: Tue, 16 Dec 2008 12:26:21 -0800
Subject: [PATCH 16/60] driver core: move knode_bus into private structure

Nothing outside of the driver core should ever touch knode_bus, so
move it out of the public eye.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/base/base.h    |  4 ++++
 drivers/base/bus.c     | 40 +++++++++++++++++++++++++++-------------
 include/linux/device.h |  1 -
 3 files changed, 31 insertions(+), 14 deletions(-)

diff --git a/drivers/base/base.h b/drivers/base/base.h
index 8af0bb2c0aa..b676f8f801f 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -69,6 +69,7 @@ struct class_private {
  * @klist_children - klist containing all children of this device
  * @knode_parent - node in sibling list
  * @knode_driver - node in driver list
+ * @knode_bus - node in bus list
  * @device - pointer back to the struct class that this structure is
  * associated with.
  *
@@ -78,12 +79,15 @@ struct device_private {
 	struct klist klist_children;
 	struct klist_node knode_parent;
 	struct klist_node knode_driver;
+	struct klist_node knode_bus;
 	struct device *device;
 };
 #define to_device_private_parent(obj)	\
 	container_of(obj, struct device_private, knode_parent)
 #define to_device_private_driver(obj)	\
 	container_of(obj, struct device_private, knode_driver)
+#define to_device_private_bus(obj)	\
+	container_of(obj, struct device_private, knode_bus)
 
 /* initialisation functions */
 extern int devices_init(void);
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 83f32b891fa..0f0a5044467 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -253,7 +253,14 @@ static ssize_t store_drivers_probe(struct bus_type *bus,
 static struct device *next_device(struct klist_iter *i)
 {
 	struct klist_node *n = klist_next(i);
-	return n ? container_of(n, struct device, knode_bus) : NULL;
+	struct device *dev = NULL;
+	struct device_private *dev_prv;
+
+	if (n) {
+		dev_prv = to_device_private_bus(n);
+		dev = dev_prv->device;
+	}
+	return dev;
 }
 
 /**
@@ -286,7 +293,7 @@ int bus_for_each_dev(struct bus_type *bus, struct device *start,
 		return -EINVAL;
 
 	klist_iter_init_node(&bus->p->klist_devices, &i,
-			     (start ? &start->knode_bus : NULL));
+			     (start ? &start->p->knode_bus : NULL));
 	while ((dev = next_device(&i)) && !error)
 		error = fn(dev, data);
 	klist_iter_exit(&i);
@@ -320,7 +327,7 @@ struct device *bus_find_device(struct bus_type *bus,
 		return NULL;
 
 	klist_iter_init_node(&bus->p->klist_devices, &i,
-			     (start ? &start->knode_bus : NULL));
+			     (start ? &start->p->knode_bus : NULL));
 	while ((dev = next_device(&i)))
 		if (match(dev, data) && get_device(dev))
 			break;
@@ -507,7 +514,8 @@ void bus_attach_device(struct device *dev)
 			ret = device_attach(dev);
 		WARN_ON(ret < 0);
 		if (ret >= 0)
-			klist_add_tail(&dev->knode_bus, &bus->p->klist_devices);
+			klist_add_tail(&dev->p->knode_bus,
+				       &bus->p->klist_devices);
 	}
 }
 
@@ -528,8 +536,8 @@ void bus_remove_device(struct device *dev)
 		sysfs_remove_link(&dev->bus->p->devices_kset->kobj,
 				  dev_name(dev));
 		device_remove_attrs(dev->bus, dev);
-		if (klist_node_attached(&dev->knode_bus))
-			klist_del(&dev->knode_bus);
+		if (klist_node_attached(&dev->p->knode_bus))
+			klist_del(&dev->p->knode_bus);
 
 		pr_debug("bus: '%s': remove device %s\n",
 			 dev->bus->name, dev_name(dev));
@@ -831,14 +839,16 @@ static void bus_remove_attrs(struct bus_type *bus)
 
 static void klist_devices_get(struct klist_node *n)
 {
-	struct device *dev = container_of(n, struct device, knode_bus);
+	struct device_private *dev_prv = to_device_private_bus(n);
+	struct device *dev = dev_prv->device;
 
 	get_device(dev);
 }
 
 static void klist_devices_put(struct klist_node *n)
 {
-	struct device *dev = container_of(n, struct device, knode_bus);
+	struct device_private *dev_prv = to_device_private_bus(n);
+	struct device *dev = dev_prv->device;
 
 	put_device(dev);
 }
@@ -993,18 +1003,20 @@ static void device_insertion_sort_klist(struct device *a, struct list_head *list
 {
 	struct list_head *pos;
 	struct klist_node *n;
+	struct device_private *dev_prv;
 	struct device *b;
 
 	list_for_each(pos, list) {
 		n = container_of(pos, struct klist_node, n_node);
-		b = container_of(n, struct device, knode_bus);
+		dev_prv = to_device_private_bus(n);
+		b = dev_prv->device;
 		if (compare(a, b) <= 0) {
-			list_move_tail(&a->knode_bus.n_node,
-				       &b->knode_bus.n_node);
+			list_move_tail(&a->p->knode_bus.n_node,
+				       &b->p->knode_bus.n_node);
 			return;
 		}
 	}
-	list_move_tail(&a->knode_bus.n_node, list);
+	list_move_tail(&a->p->knode_bus.n_node, list);
 }
 
 void bus_sort_breadthfirst(struct bus_type *bus,
@@ -1014,6 +1026,7 @@ void bus_sort_breadthfirst(struct bus_type *bus,
 	LIST_HEAD(sorted_devices);
 	struct list_head *pos, *tmp;
 	struct klist_node *n;
+	struct device_private *dev_prv;
 	struct device *dev;
 	struct klist *device_klist;
 
@@ -1022,7 +1035,8 @@ void bus_sort_breadthfirst(struct bus_type *bus,
 	spin_lock(&device_klist->k_lock);
 	list_for_each_safe(pos, tmp, &device_klist->k_list) {
 		n = container_of(pos, struct klist_node, n_node);
-		dev = container_of(n, struct device, knode_bus);
+		dev_prv = to_device_private_bus(n);
+		dev = dev_prv->device;
 		device_insertion_sort_klist(dev, &sorted_devices, compare);
 	}
 	list_splice(&sorted_devices, &device_klist->k_list);
diff --git a/include/linux/device.h b/include/linux/device.h
index e3630222c3c..e21b5d69d67 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -366,7 +366,6 @@ struct device_dma_parameters {
 };
 
 struct device {
-	struct klist_node	knode_bus;
 	struct device		*parent;
 
 	struct device_private	*p;

From d0d85ff989222f08dd1fa66321fef5567bbc4a7b Mon Sep 17 00:00:00 2001
From: Cornelia Huck <cornelia.huck@de.ibm.com>
Date: Thu, 4 Dec 2008 16:55:47 +0100
Subject: [PATCH 17/60] Make DEBUG take precedence over DYNAMIC_PRINTK_DEBUG

Statically defined DEBUG should take precedence over
dynamically enabled debugging; otherwise adding DEBUG
(like, for example, via CONFIG_DEBUG_KOBJECT) does not
have the expected result of printing pr_debug() and dev_dbg()
messages unconditionally.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 include/linux/device.h | 8 ++++----
 include/linux/kernel.h | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/linux/device.h b/include/linux/device.h
index e21b5d69d67..b97a0cf1eb0 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -553,13 +553,13 @@ extern const char *dev_driver_string(const struct device *dev);
 #define dev_info(dev, format, arg...)		\
 	dev_printk(KERN_INFO , dev , format , ## arg)
 
-#if defined(CONFIG_DYNAMIC_PRINTK_DEBUG)
+#if defined(DEBUG)
+#define dev_dbg(dev, format, arg...)		\
+	dev_printk(KERN_DEBUG , dev , format , ## arg)
+#elif defined(CONFIG_DYNAMIC_PRINTK_DEBUG)
 #define dev_dbg(dev, format, ...) do { \
 	dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
 	} while (0)
-#elif defined(DEBUG)
-#define dev_dbg(dev, format, arg...)		\
-	dev_printk(KERN_DEBUG , dev , format , ## arg)
 #else
 #define dev_dbg(dev, format, arg...)		\
 	({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; })
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index ca9ff6411df..d242fe1381f 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -349,13 +349,13 @@ static inline char *pack_hex_byte(char *buf, u8 byte)
         printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
 
 /* If you are writing a driver, please use dev_dbg instead */
-#if defined(CONFIG_DYNAMIC_PRINTK_DEBUG)
+#if defined(DEBUG)
+#define pr_debug(fmt, ...) \
+	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
+#elif defined(CONFIG_DYNAMIC_PRINTK_DEBUG)
 #define pr_debug(fmt, ...) do { \
 	dynamic_pr_debug(pr_fmt(fmt), ##__VA_ARGS__); \
 	} while (0)
-#elif defined(DEBUG)
-#define pr_debug(fmt, ...) \
-	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
 #else
 #define pr_debug(fmt, ...) \
 	({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; })

From ec0676ee28528dc8dda13a93ee4b1f215a0c2f9d Mon Sep 17 00:00:00 2001
From: Alan Stern <stern@rowland.harvard.edu>
Date: Fri, 5 Dec 2008 14:10:31 -0500
Subject: [PATCH 18/60] Driver core: move the bus notifier call points

This patch (as1184) changes the location of the notifications in
device_add() and device_del().  Now the BUS_NOTIFY_ADD_DEVICE message
is sent after dpm_sysfs_add(), which is necessary for clients that
want to add attributes to the power/ subdirectory.  The
BUS_NOTIFY_DEL_DEVICE message is correspondingly moved before
dpm_sysfs_remove().

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/base/core.c | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 180ff84ea26..ee555d7d5c3 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -894,11 +894,6 @@ int device_add(struct device *dev)
 	if (platform_notify)
 		platform_notify(dev);
 
-	/* notify clients of device entry (new way) */
-	if (dev->bus)
-		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
-					     BUS_NOTIFY_ADD_DEVICE, dev);
-
 	error = device_create_file(dev, &uevent_attr);
 	if (error)
 		goto attrError;
@@ -926,6 +921,14 @@ int device_add(struct device *dev)
 	if (error)
 		goto DPMError;
 	device_pm_add(dev);
+
+	/* Notify clients of device addition.  This call must come
+	 * after dpm_sysf_add() and before kobject_uevent().
+	 */
+	if (dev->bus)
+		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
+					     BUS_NOTIFY_ADD_DEVICE, dev);
+
 	kobject_uevent(&dev->kobj, KOBJ_ADD);
 	bus_attach_device(dev);
 	if (parent)
@@ -951,9 +954,6 @@ done:
  DPMError:
 	bus_remove_device(dev);
  BusError:
-	if (dev->bus)
-		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
-					     BUS_NOTIFY_DEL_DEVICE, dev);
 	device_remove_attrs(dev);
  AttrsError:
 	device_remove_class_symlinks(dev);
@@ -1038,6 +1038,12 @@ void device_del(struct device *dev)
 	struct device *parent = dev->parent;
 	struct class_interface *class_intf;
 
+	/* Notify clients of device removal.  This call must come
+	 * before dpm_sysfs_remove().
+	 */
+	if (dev->bus)
+		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
+					     BUS_NOTIFY_DEL_DEVICE, dev);
 	device_pm_remove(dev);
 	dpm_sysfs_remove(dev);
 	if (parent)
@@ -1075,9 +1081,6 @@ void device_del(struct device *dev)
 	 */
 	if (platform_notify_remove)
 		platform_notify_remove(dev);
-	if (dev->bus)
-		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
-					     BUS_NOTIFY_DEL_DEVICE, dev);
 	kobject_uevent(&dev->kobj, KOBJ_REMOVE);
 	cleanup_device_parent(dev);
 	kobject_del(&dev->kobj);

From 7232800ba8aca1c070d43a81cc49991f230b5da1 Mon Sep 17 00:00:00 2001
From: Ming Lei <tom.leiming@gmail.com>
Date: Wed, 17 Dec 2008 23:15:35 +0800
Subject: [PATCH 19/60] driver core:fix duplicate removing driver link in
 __device_release_driver

In __device_release_driver(),driver_sysfs_remove() has removed the
driver link under device dir in sysfs, but sysfs_remove_link() is
called again to do such thing. Remove the duplicate call to
sys_remove_link().

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/base/dd.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index bb5f1eb83c0..6fdaf76f033 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -298,7 +298,6 @@ static void __device_release_driver(struct device *dev)
 	drv = dev->driver;
 	if (drv) {
 		driver_sysfs_remove(dev);
-		sysfs_remove_link(&dev->kobj, "driver");
 
 		if (dev->bus)
 			blocking_notifier_call_chain(&dev->bus->p->bus_notifier,

From 0aa0dc41bfd993491c2344870eee7a3b218551fb Mon Sep 17 00:00:00 2001
From: Mark McLoughlin <markmc@redhat.com>
Date: Mon, 15 Dec 2008 12:58:26 +0000
Subject: [PATCH 20/60] driver core: add root_device_register()

Add support for allocating root device objects which group
device objects under /sys/devices directories.

Also add a sysfs 'module' symlink which points to the owner
of the root device object. This symlink will be used in virtio
to allow userspace to determine which virtio bus implementation
a given device is associated with.

[Includes suggestions from Cornelia Huck]

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/base/core.c    | 91 ++++++++++++++++++++++++++++++++++++++++++
 include/linux/device.h | 11 +++++
 2 files changed, 102 insertions(+)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index ee555d7d5c3..61df508fa62 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1217,6 +1217,97 @@ EXPORT_SYMBOL_GPL(put_device);
 EXPORT_SYMBOL_GPL(device_create_file);
 EXPORT_SYMBOL_GPL(device_remove_file);
 
+struct root_device
+{
+	struct device dev;
+	struct module *owner;
+};
+
+#define to_root_device(dev) container_of(dev, struct root_device, dev)
+
+static void root_device_release(struct device *dev)
+{
+	kfree(to_root_device(dev));
+}
+
+/**
+ * __root_device_register - allocate and register a root device
+ * @name: root device name
+ * @owner: owner module of the root device, usually THIS_MODULE
+ *
+ * This function allocates a root device and registers it
+ * using device_register(). In order to free the returned
+ * device, use root_device_unregister().
+ *
+ * Root devices are dummy devices which allow other devices
+ * to be grouped under /sys/devices. Use this function to
+ * allocate a root device and then use it as the parent of
+ * any device which should appear under /sys/devices/{name}
+ *
+ * The /sys/devices/{name} directory will also contain a
+ * 'module' symlink which points to the @owner directory
+ * in sysfs.
+ *
+ * Note: You probably want to use root_device_register().
+ */
+struct device *__root_device_register(const char *name, struct module *owner)
+{
+	struct root_device *root;
+	int err = -ENOMEM;
+
+	root = kzalloc(sizeof(struct root_device), GFP_KERNEL);
+	if (!root)
+		return ERR_PTR(err);
+
+	err = dev_set_name(&root->dev, name);
+	if (err) {
+		kfree(root);
+		return ERR_PTR(err);
+	}
+
+	root->dev.release = root_device_release;
+
+	err = device_register(&root->dev);
+	if (err) {
+		put_device(&root->dev);
+		return ERR_PTR(err);
+	}
+
+#ifdef CONFIG_MODULE	/* gotta find a "cleaner" way to do this */
+	if (owner) {
+		struct module_kobject *mk = &owner->mkobj;
+
+		err = sysfs_create_link(&root->dev.kobj, &mk->kobj, "module");
+		if (err) {
+			device_unregister(&root->dev);
+			return ERR_PTR(err);
+		}
+		root->owner = owner;
+	}
+#endif
+
+	return &root->dev;
+}
+EXPORT_SYMBOL_GPL(__root_device_register);
+
+/**
+ * root_device_unregister - unregister and free a root device
+ * @root: device going away.
+ *
+ * This function unregisters and cleans up a device that was created by
+ * root_device_register().
+ */
+void root_device_unregister(struct device *dev)
+{
+	struct root_device *root = to_root_device(dev);
+
+	if (root->owner)
+		sysfs_remove_link(&root->dev.kobj, "module");
+
+	device_unregister(dev);
+}
+EXPORT_SYMBOL_GPL(root_device_unregister);
+
 
 static void device_create_release(struct device *dev)
 {
diff --git a/include/linux/device.h b/include/linux/device.h
index b97a0cf1eb0..7d9da4b4993 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -482,6 +482,17 @@ extern struct device *device_find_child(struct device *dev, void *data,
 extern int device_rename(struct device *dev, char *new_name);
 extern int device_move(struct device *dev, struct device *new_parent);
 
+/*
+ * Root device objects for grouping under /sys/devices
+ */
+extern struct device *__root_device_register(const char *name,
+					     struct module *owner);
+static inline struct device *root_device_register(const char *name)
+{
+	return __root_device_register(name, THIS_MODULE);
+}
+extern void root_device_unregister(struct device *root);
+
 /*
  * Manual binding of a device to driver. See drivers/base/bus.c
  * for information on use.

From 63d12556703f17817a46e140704360b29b851bad Mon Sep 17 00:00:00 2001
From: Mark McLoughlin <markmc@redhat.com>
Date: Mon, 15 Dec 2008 12:58:27 +0000
Subject: [PATCH 21/60] virtio: do not statically allocate root device

We shouldn't be statically allocating the root device object,
so dynamically allocate it using root_device_register()
instead.

Also avoids this warning from 'rmmod virtio_pci':

  Device 'virtio-pci' does not have a release() function, it is broken and must be fixed

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/virtio/virtio_pci.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 265fdf2d127..bef6b45e8a5 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -73,10 +73,7 @@ MODULE_DEVICE_TABLE(pci, virtio_pci_id_table);
 /* A PCI device has it's own struct device and so does a virtio device so
  * we create a place for the virtio devices to show up in sysfs.  I think it
  * would make more sense for virtio to not insist on having it's own device. */
-static struct device virtio_pci_root = {
-	.parent		= NULL,
-	.init_name	= "virtio-pci",
-};
+static struct device *virtio_pci_root;
 
 /* Convert a generic virtio device to our structure */
 static struct virtio_pci_device *to_vp_device(struct virtio_device *vdev)
@@ -343,7 +340,7 @@ static int __devinit virtio_pci_probe(struct pci_dev *pci_dev,
 	if (vp_dev == NULL)
 		return -ENOMEM;
 
-	vp_dev->vdev.dev.parent = &virtio_pci_root;
+	vp_dev->vdev.dev.parent = virtio_pci_root;
 	vp_dev->vdev.dev.release = virtio_pci_release_dev;
 	vp_dev->vdev.config = &virtio_pci_config_ops;
 	vp_dev->pci_dev = pci_dev;
@@ -437,13 +434,13 @@ static int __init virtio_pci_init(void)
 {
 	int err;
 
-	err = device_register(&virtio_pci_root);
-	if (err)
-		return err;
+	virtio_pci_root = root_device_register("virtio-pci");
+	if (IS_ERR(virtio_pci_root))
+		return PTR_ERR(virtio_pci_root);
 
 	err = pci_register_driver(&virtio_pci_driver);
 	if (err)
-		device_unregister(&virtio_pci_root);
+		device_unregister(virtio_pci_root);
 
 	return err;
 }
@@ -452,8 +449,8 @@ module_init(virtio_pci_init);
 
 static void __exit virtio_pci_exit(void)
 {
-	device_unregister(&virtio_pci_root);
 	pci_unregister_driver(&virtio_pci_driver);
+	root_device_unregister(virtio_pci_root);
 }
 
 module_exit(virtio_pci_exit);

From ff8561c4ad09ca38c866436c9d67df2309b7dd40 Mon Sep 17 00:00:00 2001
From: Mark McLoughlin <markmc@redhat.com>
Date: Mon, 15 Dec 2008 12:58:28 +0000
Subject: [PATCH 22/60] lguest: do not statically allocate root device

We shouldn't be statically allocating the root device object,
so dynamically allocate it using root_device_register()
instead.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/lguest/lguest_device.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/lguest/lguest_device.c b/drivers/lguest/lguest_device.c
index 915da6b8c92..b4d44e571d7 100644
--- a/drivers/lguest/lguest_device.c
+++ b/drivers/lguest/lguest_device.c
@@ -321,10 +321,7 @@ static struct virtio_config_ops lguest_config_ops = {
 
 /* The root device for the lguest virtio devices.  This makes them appear as
  * /sys/devices/lguest/0,1,2 not /sys/devices/0,1,2. */
-static struct device lguest_root = {
-	.parent = NULL,
-	.bus_id = "lguest",
-};
+static struct device *lguest_root;
 
 /*D:120 This is the core of the lguest bus: actually adding a new device.
  * It's a separate function because it's neater that way, and because an
@@ -351,7 +348,7 @@ static void add_lguest_device(struct lguest_device_desc *d,
 	}
 
 	/* This devices' parent is the lguest/ dir. */
-	ldev->vdev.dev.parent = &lguest_root;
+	ldev->vdev.dev.parent = lguest_root;
 	/* We have a unique device index thanks to the dev_index counter. */
 	ldev->vdev.id.device = d->type;
 	/* We have a simple set of routines for querying the device's
@@ -407,7 +404,8 @@ static int __init lguest_devices_init(void)
 	if (strcmp(pv_info.name, "lguest") != 0)
 		return 0;
 
-	if (device_register(&lguest_root) != 0)
+	lguest_root = root_device_register("lguest");
+	if (IS_ERR(lguest_root))
 		panic("Could not register lguest root");
 
 	/* Devices are in a single page above top of "normal" mem */

From 035da16fb529c0383ac27c712a5bbade5c11cafe Mon Sep 17 00:00:00 2001
From: Mark McLoughlin <markmc@redhat.com>
Date: Mon, 15 Dec 2008 12:58:29 +0000
Subject: [PATCH 23/60] s390: remove s390_root_dev_*()

Replace s390_root_dev_register() with root_device_register() etc.

[Includes fix from Cornelia Huck]

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/s390/include/asm/s390_rdev.h | 15 ---------
 drivers/s390/Makefile             |  2 +-
 drivers/s390/block/dcssblk.c      | 11 +++----
 drivers/s390/crypto/ap_bus.c      |  7 ++---
 drivers/s390/kvm/kvm_virtio.c     |  5 ++-
 drivers/s390/net/cu3088.c         |  7 ++---
 drivers/s390/net/qeth_core_main.c |  7 ++---
 drivers/s390/net/qeth_l2_main.c   |  2 --
 drivers/s390/net/qeth_l3_main.c   |  2 --
 drivers/s390/s390_rdev.c          | 51 -------------------------------
 net/iucv/iucv.c                   |  7 ++---
 11 files changed, 20 insertions(+), 96 deletions(-)
 delete mode 100644 arch/s390/include/asm/s390_rdev.h
 delete mode 100644 drivers/s390/s390_rdev.c

diff --git a/arch/s390/include/asm/s390_rdev.h b/arch/s390/include/asm/s390_rdev.h
deleted file mode 100644
index 6fa20442a48..00000000000
--- a/arch/s390/include/asm/s390_rdev.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
- *  include/asm-s390/ccwdev.h
- *
- *    Copyright (C) 2002,2005 IBM Deutschland Entwicklung GmbH, IBM Corporation
- *    Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
- *               Carsten Otte  <cotte@de.ibm.com>
- *
- *  Interface for s390 root device
- */
-
-#ifndef _S390_RDEV_H_
-#define _S390_RDEV_H_
-extern struct device *s390_root_dev_register(const char *);
-extern void s390_root_dev_unregister(struct device *);
-#endif /* _S390_RDEV_H_ */
diff --git a/drivers/s390/Makefile b/drivers/s390/Makefile
index 4f4e7cf105d..d0eae59bc36 100644
--- a/drivers/s390/Makefile
+++ b/drivers/s390/Makefile
@@ -4,7 +4,7 @@
 
 CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w
 
-obj-y += s390mach.o sysinfo.o s390_rdev.o
+obj-y += s390mach.o sysinfo.o
 obj-y += cio/ block/ char/ crypto/ net/ scsi/ kvm/
 
 drivers-y += drivers/s390/built-in.o
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 26ffc6ab441..cfdcf1aed33 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -18,7 +18,6 @@
 #include <asm/io.h>
 #include <linux/completion.h>
 #include <linux/interrupt.h>
-#include <asm/s390_rdev.h>
 
 #define DCSSBLK_NAME "dcssblk"
 #define DCSSBLK_MINORS_PER_DISK 1
@@ -946,7 +945,7 @@ dcssblk_check_params(void)
 static void __exit
 dcssblk_exit(void)
 {
-	s390_root_dev_unregister(dcssblk_root_dev);
+	root_device_unregister(dcssblk_root_dev);
 	unregister_blkdev(dcssblk_major, DCSSBLK_NAME);
 }
 
@@ -955,22 +954,22 @@ dcssblk_init(void)
 {
 	int rc;
 
-	dcssblk_root_dev = s390_root_dev_register("dcssblk");
+	dcssblk_root_dev = root_device_register("dcssblk");
 	if (IS_ERR(dcssblk_root_dev))
 		return PTR_ERR(dcssblk_root_dev);
 	rc = device_create_file(dcssblk_root_dev, &dev_attr_add);
 	if (rc) {
-		s390_root_dev_unregister(dcssblk_root_dev);
+		root_device_unregister(dcssblk_root_dev);
 		return rc;
 	}
 	rc = device_create_file(dcssblk_root_dev, &dev_attr_remove);
 	if (rc) {
-		s390_root_dev_unregister(dcssblk_root_dev);
+		root_device_unregister(dcssblk_root_dev);
 		return rc;
 	}
 	rc = register_blkdev(0, DCSSBLK_NAME);
 	if (rc < 0) {
-		s390_root_dev_unregister(dcssblk_root_dev);
+		root_device_unregister(dcssblk_root_dev);
 		return rc;
 	}
 	dcssblk_major = rc;
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 1f5f5d2d87d..9c148406b98 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -36,7 +36,6 @@
 #include <linux/notifier.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
-#include <asm/s390_rdev.h>
 #include <asm/reset.h>
 #include <asm/airq.h>
 #include <asm/atomic.h>
@@ -1522,7 +1521,7 @@ int __init ap_module_init(void)
 	}
 
 	/* Create /sys/devices/ap. */
-	ap_root_device = s390_root_dev_register("ap");
+	ap_root_device = root_device_register("ap");
 	rc = IS_ERR(ap_root_device) ? PTR_ERR(ap_root_device) : 0;
 	if (rc)
 		goto out_bus;
@@ -1565,7 +1564,7 @@ out_work:
 	hrtimer_cancel(&ap_poll_timer);
 	destroy_workqueue(ap_work_queue);
 out_root:
-	s390_root_dev_unregister(ap_root_device);
+	root_device_unregister(ap_root_device);
 out_bus:
 	while (i--)
 		bus_remove_file(&ap_bus_type, ap_bus_attrs[i]);
@@ -1600,7 +1599,7 @@ void ap_module_exit(void)
 	hrtimer_cancel(&ap_poll_timer);
 	destroy_workqueue(ap_work_queue);
 	tasklet_kill(&ap_tasklet);
-	s390_root_dev_unregister(ap_root_device);
+	root_device_unregister(ap_root_device);
 	while ((dev = bus_find_device(&ap_bus_type, NULL, NULL,
 		    __ap_match_all)))
 	{
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 28c90b89f2b..cbc8566fab7 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -24,7 +24,6 @@
 #include <asm/kvm_virtio.h>
 #include <asm/setup.h>
 #include <asm/s390_ext.h>
-#include <asm/s390_rdev.h>
 
 #define VIRTIO_SUBCODE_64 0x0D00
 
@@ -335,7 +334,7 @@ static int __init kvm_devices_init(void)
 	if (!MACHINE_IS_KVM)
 		return -ENODEV;
 
-	kvm_root = s390_root_dev_register("kvm_s390");
+	kvm_root = root_device_register("kvm_s390");
 	if (IS_ERR(kvm_root)) {
 		rc = PTR_ERR(kvm_root);
 		printk(KERN_ERR "Could not register kvm_s390 root device");
@@ -344,7 +343,7 @@ static int __init kvm_devices_init(void)
 
 	rc = vmem_add_mapping(real_memory_size, PAGE_SIZE);
 	if (rc) {
-		s390_root_dev_unregister(kvm_root);
+		root_device_unregister(kvm_root);
 		return rc;
 	}
 
diff --git a/drivers/s390/net/cu3088.c b/drivers/s390/net/cu3088.c
index f4a32375c03..48383459e99 100644
--- a/drivers/s390/net/cu3088.c
+++ b/drivers/s390/net/cu3088.c
@@ -25,7 +25,6 @@
 #include <linux/module.h>
 #include <linux/err.h>
 
-#include <asm/s390_rdev.h>
 #include <asm/ccwdev.h>
 #include <asm/ccwgroup.h>
 
@@ -120,12 +119,12 @@ cu3088_init (void)
 {
 	int rc;
 
-	cu3088_root_dev = s390_root_dev_register("cu3088");
+	cu3088_root_dev = root_device_register("cu3088");
 	if (IS_ERR(cu3088_root_dev))
 		return PTR_ERR(cu3088_root_dev);
 	rc = ccw_driver_register(&cu3088_driver);
 	if (rc)
-		s390_root_dev_unregister(cu3088_root_dev);
+		root_device_unregister(cu3088_root_dev);
 
 	return rc;
 }
@@ -134,7 +133,7 @@ static void __exit
 cu3088_exit (void)
 {
 	ccw_driver_unregister(&cu3088_driver);
-	s390_root_dev_unregister(cu3088_root_dev);
+	root_device_unregister(cu3088_root_dev);
 }
 
 MODULE_DEVICE_TABLE(ccw,cu3088_ids);
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 6811dd529f4..d1b5bebea7f 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -24,7 +24,6 @@
 
 #include <asm/ebcdic.h>
 #include <asm/io.h>
-#include <asm/s390_rdev.h>
 
 #include "qeth_core.h"
 #include "qeth_core_offl.h"
@@ -4525,7 +4524,7 @@ static int __init qeth_core_init(void)
 				&driver_attr_group);
 	if (rc)
 		goto driver_err;
-	qeth_core_root_dev = s390_root_dev_register("qeth");
+	qeth_core_root_dev = root_device_register("qeth");
 	rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
 	if (rc)
 		goto register_err;
@@ -4539,7 +4538,7 @@ static int __init qeth_core_init(void)
 
 	return 0;
 slab_err:
-	s390_root_dev_unregister(qeth_core_root_dev);
+	root_device_unregister(qeth_core_root_dev);
 register_err:
 	driver_remove_file(&qeth_core_ccwgroup_driver.driver,
 			   &driver_attr_group);
@@ -4557,7 +4556,7 @@ out_err:
 
 static void __exit qeth_core_exit(void)
 {
-	s390_root_dev_unregister(qeth_core_root_dev);
+	root_device_unregister(qeth_core_root_dev);
 	driver_remove_file(&qeth_core_ccwgroup_driver.driver,
 			   &driver_attr_group);
 	ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 21627ba3093..591a2b3ae4c 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -20,8 +20,6 @@
 #include <linux/mii.h>
 #include <linux/ip.h>
 
-#include <asm/s390_rdev.h>
-
 #include "qeth_core.h"
 #include "qeth_core_offl.h"
 
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index cfda1ecffdf..4693ee4e7b9 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -26,8 +26,6 @@
 #include <net/ip.h>
 #include <net/arp.h>
 
-#include <asm/s390_rdev.h>
-
 #include "qeth_l3.h"
 #include "qeth_core_offl.h"
 
diff --git a/drivers/s390/s390_rdev.c b/drivers/s390/s390_rdev.c
deleted file mode 100644
index 64371c05a3b..00000000000
--- a/drivers/s390/s390_rdev.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- *  drivers/s390/s390_rdev.c
- *  s390 root device
- *
- *    Copyright (C) 2002, 2005 IBM Deutschland Entwicklung GmbH,
- *			 IBM Corporation
- *    Author(s): Cornelia Huck (cornelia.huck@de.ibm.com)
- *		  Carsten Otte  (cotte@de.ibm.com)
- */
-
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/device.h>
-#include <asm/s390_rdev.h>
-
-static void
-s390_root_dev_release(struct device *dev)
-{
-	kfree(dev);
-}
-
-struct device *
-s390_root_dev_register(const char *name)
-{
-	struct device *dev;
-	int ret;
-
-	if (!strlen(name))
-		return ERR_PTR(-EINVAL);
-	dev = kzalloc(sizeof(struct device), GFP_KERNEL);
-	if (!dev)
-		return ERR_PTR(-ENOMEM);
-	dev_set_name(dev, name);
-	dev->release = s390_root_dev_release;
-	ret = device_register(dev);
-	if (ret) {
-		kfree(dev);
-		return ERR_PTR(ret);
-	}
-	return dev;
-}
-
-void
-s390_root_dev_unregister(struct device *dev)
-{
-	if (dev)
-		device_unregister(dev);
-}
-
-EXPORT_SYMBOL(s390_root_dev_register);
-EXPORT_SYMBOL(s390_root_dev_unregister);
diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index 032f61e9859..a35240f61ec 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -50,7 +50,6 @@
 #include <asm/ebcdic.h>
 #include <asm/io.h>
 #include <asm/s390_ext.h>
-#include <asm/s390_rdev.h>
 #include <asm/smp.h>
 
 /*
@@ -1696,7 +1695,7 @@ static int __init iucv_init(void)
 	rc = register_external_interrupt(0x4000, iucv_external_interrupt);
 	if (rc)
 		goto out;
-	iucv_root = s390_root_dev_register("iucv");
+	iucv_root = root_device_register("iucv");
 	if (IS_ERR(iucv_root)) {
 		rc = PTR_ERR(iucv_root);
 		goto out_int;
@@ -1740,7 +1739,7 @@ out_free:
 		kfree(iucv_irq_data[cpu]);
 		iucv_irq_data[cpu] = NULL;
 	}
-	s390_root_dev_unregister(iucv_root);
+	root_device_unregister(iucv_root);
 out_int:
 	unregister_external_interrupt(0x4000, iucv_external_interrupt);
 out:
@@ -1770,7 +1769,7 @@ static void __exit iucv_exit(void)
 		kfree(iucv_irq_data[cpu]);
 		iucv_irq_data[cpu] = NULL;
 	}
-	s390_root_dev_unregister(iucv_root);
+	root_device_unregister(iucv_root);
 	bus_unregister(&iucv_bus);
 	unregister_external_interrupt(0x4000, iucv_external_interrupt);
 }

From 2a678cc53977c97aaf666c338f6312b7bbd3406d Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:34 -0800
Subject: [PATCH 24/60] xen: struct device - replace bus_id with dev_name(),
 dev_set_name()

CC: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/xen/xenbus/xenbus_probe.c | 27 +++++++++++++++------------
 drivers/xen/xenbus/xenbus_probe.h |  4 +++-
 2 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index 7f24a98a446..b2a03184a24 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -99,15 +99,15 @@ static int xenbus_uevent(struct device *_dev, struct kobj_uevent_env *env)
 }
 
 /* device/<type>/<id> => <type>-<id> */
-static int frontend_bus_id(char bus_id[BUS_ID_SIZE], const char *nodename)
+static int frontend_bus_id(char bus_id[XEN_BUS_ID_SIZE], const char *nodename)
 {
 	nodename = strchr(nodename, '/');
-	if (!nodename || strlen(nodename + 1) >= BUS_ID_SIZE) {
+	if (!nodename || strlen(nodename + 1) >= XEN_BUS_ID_SIZE) {
 		printk(KERN_WARNING "XENBUS: bad frontend %s\n", nodename);
 		return -EINVAL;
 	}
 
-	strlcpy(bus_id, nodename + 1, BUS_ID_SIZE);
+	strlcpy(bus_id, nodename + 1, XEN_BUS_ID_SIZE);
 	if (!strchr(bus_id, '/')) {
 		printk(KERN_WARNING "XENBUS: bus_id %s no slash\n", bus_id);
 		return -EINVAL;
@@ -460,6 +460,7 @@ int xenbus_probe_node(struct xen_bus_type *bus,
 		      const char *type,
 		      const char *nodename)
 {
+	char devname[XEN_BUS_ID_SIZE];
 	int err;
 	struct xenbus_device *xendev;
 	size_t stringlen;
@@ -494,10 +495,12 @@ int xenbus_probe_node(struct xen_bus_type *bus,
 	xendev->dev.bus = &bus->bus;
 	xendev->dev.release = xenbus_dev_release;
 
-	err = bus->get_bus_id(xendev->dev.bus_id, xendev->nodename);
+	err = bus->get_bus_id(devname, xendev->nodename);
 	if (err)
 		goto fail;
 
+	dev_set_name(&xendev->dev, devname);
+
 	/* Register with generic device framework. */
 	err = device_register(&xendev->dev);
 	if (err)
@@ -611,7 +614,7 @@ void xenbus_dev_changed(const char *node, struct xen_bus_type *bus)
 {
 	int exists, rootlen;
 	struct xenbus_device *dev;
-	char type[BUS_ID_SIZE];
+	char type[XEN_BUS_ID_SIZE];
 	const char *p, *root;
 
 	if (char_count(node, '/') < 2)
@@ -625,8 +628,8 @@ void xenbus_dev_changed(const char *node, struct xen_bus_type *bus)
 
 	/* backend/<type>/... or device/<type>/... */
 	p = strchr(node, '/') + 1;
-	snprintf(type, BUS_ID_SIZE, "%.*s", (int)strcspn(p, "/"), p);
-	type[BUS_ID_SIZE-1] = '\0';
+	snprintf(type, XEN_BUS_ID_SIZE, "%.*s", (int)strcspn(p, "/"), p);
+	type[XEN_BUS_ID_SIZE-1] = '\0';
 
 	rootlen = strsep_len(node, '/', bus->levels);
 	if (rootlen < 0)
@@ -674,7 +677,7 @@ static int suspend_dev(struct device *dev, void *data)
 		err = drv->suspend(xdev);
 	if (err)
 		printk(KERN_WARNING
-		       "xenbus: suspend %s failed: %i\n", dev->bus_id, err);
+		       "xenbus: suspend %s failed: %i\n", dev_name(dev), err);
 	return 0;
 }
 
@@ -695,7 +698,7 @@ static int suspend_cancel_dev(struct device *dev, void *data)
 	if (err)
 		printk(KERN_WARNING
 		       "xenbus: suspend_cancel %s failed: %i\n",
-		       dev->bus_id, err);
+		       dev_name(dev), err);
 	return 0;
 }
 
@@ -717,7 +720,7 @@ static int resume_dev(struct device *dev, void *data)
 	if (err) {
 		printk(KERN_WARNING
 		       "xenbus: resume (talk_to_otherend) %s failed: %i\n",
-		       dev->bus_id, err);
+		       dev_name(dev), err);
 		return err;
 	}
 
@@ -728,7 +731,7 @@ static int resume_dev(struct device *dev, void *data)
 		if (err) {
 			printk(KERN_WARNING
 			       "xenbus: resume %s failed: %i\n",
-			       dev->bus_id, err);
+			       dev_name(dev), err);
 			return err;
 		}
 	}
@@ -737,7 +740,7 @@ static int resume_dev(struct device *dev, void *data)
 	if (err) {
 		printk(KERN_WARNING
 		       "xenbus_probe: resume (watch_otherend) %s failed: "
-		       "%d.\n", dev->bus_id, err);
+		       "%d.\n", dev_name(dev), err);
 		return err;
 	}
 
diff --git a/drivers/xen/xenbus/xenbus_probe.h b/drivers/xen/xenbus/xenbus_probe.h
index e09b19415a4..6c5e3185a6a 100644
--- a/drivers/xen/xenbus/xenbus_probe.h
+++ b/drivers/xen/xenbus/xenbus_probe.h
@@ -34,6 +34,8 @@
 #ifndef _XENBUS_PROBE_H
 #define _XENBUS_PROBE_H
 
+#define XEN_BUS_ID_SIZE			20
+
 #ifdef CONFIG_XEN_BACKEND
 extern void xenbus_backend_suspend(int (*fn)(struct device *, void *));
 extern void xenbus_backend_resume(int (*fn)(struct device *, void *));
@@ -52,7 +54,7 @@ struct xen_bus_type
 {
 	char *root;
 	unsigned int levels;
-	int (*get_bus_id)(char bus_id[BUS_ID_SIZE], const char *nodename);
+	int (*get_bus_id)(char bus_id[XEN_BUS_ID_SIZE], const char *nodename);
 	int (*probe)(const char *type, const char *dir);
 	struct bus_type bus;
 };

From 40f91de6a1d65a2d0ce8bc296ed0a2d53d63c845 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:34 -0800
Subject: [PATCH 25/60] w1: struct device - replace bus_id with dev_name(),
 dev_set_name()

CC: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/w1/w1.c     | 19 +++++++++----------
 drivers/w1/w1_int.c |  3 +--
 2 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index 3b615d4022e..acc7e3b7fe1 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -197,7 +197,7 @@ struct device_driver w1_master_driver = {
 struct device w1_master_device = {
 	.parent = NULL,
 	.bus = &w1_bus_type,
-	.bus_id = "w1 bus master",
+	.init_name = "w1 bus master",
 	.driver = &w1_master_driver,
 	.release = &w1_master_release
 };
@@ -211,7 +211,7 @@ static struct device_driver w1_slave_driver = {
 struct device w1_slave_device = {
 	.parent = NULL,
 	.bus = &w1_bus_type,
-	.bus_id = "w1 bus slave",
+	.init_name = "w1 bus slave",
 	.driver = &w1_slave_driver,
 	.release = &w1_slave_release
 };
@@ -573,7 +573,7 @@ static int w1_uevent(struct device *dev, struct kobj_uevent_env *env)
 	}
 
 	dev_dbg(dev, "Hotplug event for %s %s, bus_id=%s.\n",
-			event_owner, name, dev->bus_id);
+			event_owner, name, dev_name(dev));
 
 	if (dev->driver != &w1_slave_driver || !sl)
 		return 0;
@@ -605,8 +605,7 @@ static int __w1_attach_slave_device(struct w1_slave *sl)
 	sl->dev.bus = &w1_bus_type;
 	sl->dev.release = &w1_slave_release;
 
-	snprintf(&sl->dev.bus_id[0], sizeof(sl->dev.bus_id),
-		 "%02x-%012llx",
+	dev_set_name(&sl->dev, "%02x-%012llx",
 		 (unsigned int) sl->reg_num.family,
 		 (unsigned long long) sl->reg_num.id);
 	snprintf(&sl->name[0], sizeof(sl->name),
@@ -615,13 +614,13 @@ static int __w1_attach_slave_device(struct w1_slave *sl)
 		 (unsigned long long) sl->reg_num.id);
 
 	dev_dbg(&sl->dev, "%s: registering %s as %p.\n", __func__,
-		&sl->dev.bus_id[0], sl);
+		dev_name(&sl->dev), sl);
 
 	err = device_register(&sl->dev);
 	if (err < 0) {
 		dev_err(&sl->dev,
 			"Device registration [%s] failed. err=%d\n",
-			sl->dev.bus_id, err);
+			dev_name(&sl->dev), err);
 		return err;
 	}
 
@@ -630,7 +629,7 @@ static int __w1_attach_slave_device(struct w1_slave *sl)
 	if (err < 0) {
 		dev_err(&sl->dev,
 			"sysfs file creation for [%s] failed. err=%d\n",
-			sl->dev.bus_id, err);
+			dev_name(&sl->dev), err);
 		goto out_unreg;
 	}
 
@@ -639,7 +638,7 @@ static int __w1_attach_slave_device(struct w1_slave *sl)
 	if (err < 0) {
 		dev_err(&sl->dev,
 			"sysfs file creation for [%s] failed. err=%d\n",
-			sl->dev.bus_id, err);
+			dev_name(&sl->dev), err);
 		goto out_rem1;
 	}
 
@@ -648,7 +647,7 @@ static int __w1_attach_slave_device(struct w1_slave *sl)
 	    ((err = sl->family->fops->add_slave(sl)) < 0)) {
 		dev_err(&sl->dev,
 			"sysfs file creation for [%s] failed. err=%d\n",
-			sl->dev.bus_id, err);
+			dev_name(&sl->dev), err);
 		goto out_rem2;
 	}
 
diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c
index a3a54567bfb..4a46ed58ece 100644
--- a/drivers/w1/w1_int.c
+++ b/drivers/w1/w1_int.c
@@ -75,8 +75,7 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
 	mutex_init(&dev->mutex);
 
 	memcpy(&dev->dev, device, sizeof(struct device));
-	snprintf(dev->dev.bus_id, sizeof(dev->dev.bus_id),
-		  "w1_bus_master%u", dev->id);
+	dev_set_name(&dev->dev, "w1_bus_master%u", dev->id);
 	snprintf(dev->name, sizeof(dev->name), "w1_bus_master%u", dev->id);
 
 	dev->driver = driver;

From 64dba9a9a33ec9ba00b0a504562d9f692ae89884 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:35 -0800
Subject: [PATCH 26/60] video: struct device - replace bus_id with dev_name(),
 dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/video/backlight/backlight.c | 2 +-
 drivers/video/backlight/lcd.c       | 2 +-
 drivers/video/output.c              | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index fab0bc874b5..0664fc03223 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -217,7 +217,7 @@ struct backlight_device *backlight_device_register(const char *name,
 	new_bd->dev.class = backlight_class;
 	new_bd->dev.parent = parent;
 	new_bd->dev.release = bl_device_release;
-	strlcpy(new_bd->dev.bus_id, name, BUS_ID_SIZE);
+	dev_set_name(&new_bd->dev, name);
 	dev_set_drvdata(&new_bd->dev, devdata);
 
 	rc = device_register(&new_bd->dev);
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index 680e57b616c..b6449470106 100644
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -208,7 +208,7 @@ struct lcd_device *lcd_device_register(const char *name, struct device *parent,
 	new_ld->dev.class = lcd_class;
 	new_ld->dev.parent = parent;
 	new_ld->dev.release = lcd_device_release;
-	strlcpy(new_ld->dev.bus_id, name, BUS_ID_SIZE);
+	dev_set_name(&new_ld->dev, name);
 	dev_set_drvdata(&new_ld->dev, devdata);
 
 	rc = device_register(&new_ld->dev);
diff --git a/drivers/video/output.c b/drivers/video/output.c
index f2df5519c9c..5e6439ae739 100644
--- a/drivers/video/output.c
+++ b/drivers/video/output.c
@@ -96,7 +96,7 @@ struct output_device *video_output_register(const char *name,
 	new_dev->props = op;
 	new_dev->dev.class = &video_output_class;
 	new_dev->dev.parent = dev;
-	strlcpy(new_dev->dev.bus_id,name, BUS_ID_SIZE);
+	dev_set_name(&new_dev->dev, name);
 	dev_set_drvdata(&new_dev->dev, devdata);
 	ret_code = device_register(&new_dev->dev);
 	if (ret_code) {

From 0bad16aa081002c290d4b424bc019d890cab8796 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:35 -0800
Subject: [PATCH 27/60] tifm: struct device - replace bus_id with dev_name(),
 dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/misc/tifm_7xx1.c | 2 +-
 drivers/misc/tifm_core.c | 7 +++----
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/tifm_7xx1.c b/drivers/misc/tifm_7xx1.c
index 67503ea71d2..e71eba31dec 100644
--- a/drivers/misc/tifm_7xx1.c
+++ b/drivers/misc/tifm_7xx1.c
@@ -164,7 +164,7 @@ static void tifm_7xx1_switch_media(struct work_struct *work)
 		if (sock) {
 			printk(KERN_INFO
 			       "%s : demand removing card from socket %u:%u\n",
-			       fm->dev.bus_id, fm->id, cnt);
+			       dev_name(&fm->dev), fm->id, cnt);
 			fm->sockets[cnt] = NULL;
 			sock_addr = sock->addr;
 			spin_unlock_irqrestore(&fm->lock, flags);
diff --git a/drivers/misc/tifm_core.c b/drivers/misc/tifm_core.c
index 82dc72a1484..98bcba521da 100644
--- a/drivers/misc/tifm_core.c
+++ b/drivers/misc/tifm_core.c
@@ -203,7 +203,7 @@ int tifm_add_adapter(struct tifm_adapter *fm)
 	if (rc)
 		return rc;
 
-	snprintf(fm->dev.bus_id, BUS_ID_SIZE, "tifm%u", fm->id);
+	dev_set_name(&fm->dev, "tifm%u", fm->id);
 	rc = device_add(&fm->dev);
 	if (rc) {
 		spin_lock(&tifm_adapter_lock);
@@ -266,9 +266,8 @@ struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id,
 		sock->dev.dma_mask = fm->dev.parent->dma_mask;
 		sock->dev.release = tifm_free_device;
 
-		snprintf(sock->dev.bus_id, BUS_ID_SIZE,
-			 "tifm_%s%u:%u", tifm_media_type_name(type, 2),
-			 fm->id, id);
+		dev_set_name(&sock->dev, "tifm_%s%u:%u",
+			     tifm_media_type_name(type, 2), fm->id, id);
 		printk(KERN_INFO DRIVER_NAME
 		       ": %s card detected in socket %u:%u\n",
 		       tifm_media_type_name(type, 0), fm->id, id);

From 354655ea9714e5b0e8d23c90a5382986815687e0 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:37 -0800
Subject: [PATCH 28/60] thermal: struct device - replace bus_id with
 dev_name(), dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/thermal/thermal_sys.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index fe07462d594..8171ca17b93 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -579,7 +579,7 @@ static void thermal_release(struct device *dev)
 	struct thermal_zone_device *tz;
 	struct thermal_cooling_device *cdev;
 
-	if (!strncmp(dev->bus_id, "thermal_zone", sizeof "thermal_zone" - 1)) {
+	if (!strncmp(dev_name(dev), "thermal_zone", sizeof "thermal_zone" - 1)) {
 		tz = to_thermal_zone(dev);
 		kfree(tz);
 	} else {
@@ -630,7 +630,7 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *type,
 	cdev->ops = ops;
 	cdev->device.class = &thermal_class;
 	cdev->devdata = devdata;
-	sprintf(cdev->device.bus_id, "cooling_device%d", cdev->id);
+	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
 	result = device_register(&cdev->device);
 	if (result) {
 		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
@@ -769,7 +769,7 @@ struct thermal_zone_device *thermal_zone_device_register(char *type,
 	tz->device.class = &thermal_class;
 	tz->devdata = devdata;
 	tz->trips = trips;
-	sprintf(tz->device.bus_id, "thermal_zone%d", tz->id);
+	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
 	result = device_register(&tz->device);
 	if (result) {
 		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);

From 94b324864ef2a8e461f3933ab99638255299e9f0 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:37 -0800
Subject: [PATCH 29/60] swiotlb: struct device - replace bus_id with
 dev_name(), dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 lib/swiotlb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 7f5e21b9c16..c2a4e640145 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -647,7 +647,7 @@ swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
 	 * the damage, or panic when the transfer is too big.
 	 */
 	printk(KERN_ERR "DMA: Out of SW-IOMMU space for %zu bytes at "
-	       "device %s\n", size, dev ? dev->bus_id : "?");
+	       "device %s\n", size, dev ? dev_name(dev) : "?");
 
 	if (size > io_tlb_overflow && do_panic) {
 		if (dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL)

From 35f74fcab1228be03eab5f4d21ddc89fca1bc5b8 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:37 -0800
Subject: [PATCH 30/60] spi: struct device - replace bus_id with dev_name(),
 dev_set_name()

Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/spi/spi.c           | 20 +++++++++-----------
 drivers/spi/spi_bitbang.c   |  2 +-
 drivers/spi/spi_butterfly.c |  2 +-
 drivers/spi/spi_lm70llp.c   |  2 +-
 4 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 3734dc9708e..643908b74bc 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -47,7 +47,7 @@ modalias_show(struct device *dev, struct device_attribute *a, char *buf)
 {
 	const struct spi_device	*spi = to_spi_device(dev);
 
-	return snprintf(buf, BUS_ID_SIZE + 1, "%s\n", spi->modalias);
+	return sprintf(buf, "%s\n", spi->modalias);
 }
 
 static struct device_attribute spi_dev_attrs[] = {
@@ -63,7 +63,7 @@ static int spi_match_device(struct device *dev, struct device_driver *drv)
 {
 	const struct spi_device	*spi = to_spi_device(dev);
 
-	return strncmp(spi->modalias, drv->name, BUS_ID_SIZE) == 0;
+	return strcmp(spi->modalias, drv->name) == 0;
 }
 
 static int spi_uevent(struct device *dev, struct kobj_uevent_env *env)
@@ -243,8 +243,7 @@ int spi_add_device(struct spi_device *spi)
 	}
 
 	/* Set the bus ID string */
-	snprintf(spi->dev.bus_id, sizeof spi->dev.bus_id,
-			"%s.%u", spi->master->dev.bus_id,
+	dev_set_name(&spi->dev, "%s.%u", dev_name(&spi->master->dev),
 			spi->chip_select);
 
 
@@ -254,7 +253,7 @@ int spi_add_device(struct spi_device *spi)
 	 */
 	mutex_lock(&spi_add_lock);
 
-	if (bus_find_device_by_name(&spi_bus_type, NULL, spi->dev.bus_id)
+	if (bus_find_device_by_name(&spi_bus_type, NULL, dev_name(&spi->dev))
 			!= NULL) {
 		dev_err(dev, "chipselect %d already in use\n",
 				spi->chip_select);
@@ -269,7 +268,7 @@ int spi_add_device(struct spi_device *spi)
 	status = spi->master->setup(spi);
 	if (status < 0) {
 		dev_err(dev, "can't %s %s, status %d\n",
-				"setup", spi->dev.bus_id, status);
+				"setup", dev_name(&spi->dev), status);
 		goto done;
 	}
 
@@ -277,9 +276,9 @@ int spi_add_device(struct spi_device *spi)
 	status = device_add(&spi->dev);
 	if (status < 0)
 		dev_err(dev, "can't %s %s, status %d\n",
-				"add", spi->dev.bus_id, status);
+				"add", dev_name(&spi->dev), status);
 	else
-		dev_dbg(dev, "registered child %s\n", spi->dev.bus_id);
+		dev_dbg(dev, "registered child %s\n", dev_name(&spi->dev));
 
 done:
 	mutex_unlock(&spi_add_lock);
@@ -504,12 +503,11 @@ int spi_register_master(struct spi_master *master)
 	/* register the device, then userspace will see it.
 	 * registration fails if the bus ID is in use.
 	 */
-	snprintf(master->dev.bus_id, sizeof master->dev.bus_id,
-		"spi%u", master->bus_num);
+	dev_set_name(&master->dev, "spi%u", master->bus_num);
 	status = device_add(&master->dev);
 	if (status < 0)
 		goto done;
-	dev_dbg(dev, "registered master %s%s\n", master->dev.bus_id,
+	dev_dbg(dev, "registered master %s%s\n", dev_name(&master->dev),
 			dynamic ? " (dynamic)" : "");
 
 	/* populate children from any spi device tables */
diff --git a/drivers/spi/spi_bitbang.c b/drivers/spi/spi_bitbang.c
index 96cc39ecb6e..85e61f45121 100644
--- a/drivers/spi/spi_bitbang.c
+++ b/drivers/spi/spi_bitbang.c
@@ -475,7 +475,7 @@ int spi_bitbang_start(struct spi_bitbang *bitbang)
 	/* this task is the only thing to touch the SPI bits */
 	bitbang->busy = 0;
 	bitbang->workqueue = create_singlethread_workqueue(
-			bitbang->master->dev.parent->bus_id);
+			dev_name(bitbang->master->dev.parent));
 	if (bitbang->workqueue == NULL) {
 		status = -EBUSY;
 		goto err1;
diff --git a/drivers/spi/spi_butterfly.c b/drivers/spi/spi_butterfly.c
index 0ee2b209025..c2184866fa9 100644
--- a/drivers/spi/spi_butterfly.c
+++ b/drivers/spi/spi_butterfly.c
@@ -287,7 +287,7 @@ static void butterfly_attach(struct parport *p)
 	pp->dataflash = spi_new_device(pp->bitbang.master, &pp->info[0]);
 	if (pp->dataflash)
 		pr_debug("%s: dataflash at %s\n", p->name,
-				pp->dataflash->dev.bus_id);
+				dev_name(&pp->dataflash->dev));
 
 	// dev_info(_what?_, ...)
 	pr_info("%s: AVR Butterfly\n", p->name);
diff --git a/drivers/spi/spi_lm70llp.c b/drivers/spi/spi_lm70llp.c
index 39d8d8ad65c..af6526767e2 100644
--- a/drivers/spi/spi_lm70llp.c
+++ b/drivers/spi/spi_lm70llp.c
@@ -287,7 +287,7 @@ static void spi_lm70llp_attach(struct parport *p)
 	pp->spidev_lm70 = spi_new_device(pp->bitbang.master, &pp->info);
 	if (pp->spidev_lm70)
 		dev_dbg(&pp->spidev_lm70->dev, "spidev_lm70 at %s\n",
-				pp->spidev_lm70->dev.bus_id);
+				dev_name(&pp->spidev_lm70->dev));
 	else {
 		printk(KERN_WARNING "%s: spi_new_device failed\n", DRVNAME);
 		status = -ENODEV;

From bb0dc43eeeea6a3ace7fae42e583a9be176eb1f9 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:37 -0800
Subject: [PATCH 31/60] SGI: struct device - replace bus_id with dev_name(),
 dev_set_name()

CC: Jack Steiner <steiner@sgi.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/misc/sgi-gru/grumain.c | 2 +-
 drivers/misc/sgi-xp/xp_main.c  | 2 +-
 drivers/misc/sgi-xp/xpc_main.c | 8 ++++----
 drivers/misc/sgi-xp/xpnet.c    | 2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/misc/sgi-gru/grumain.c b/drivers/misc/sgi-gru/grumain.c
index e11e1ac5090..3d2fc216bae 100644
--- a/drivers/misc/sgi-gru/grumain.c
+++ b/drivers/misc/sgi-gru/grumain.c
@@ -29,7 +29,7 @@ static struct device_driver gru_driver = {
 };
 
 static struct device gru_device = {
-	.bus_id = {0},
+	.init_name = "",
 	.driver = &gru_driver,
 };
 
diff --git a/drivers/misc/sgi-xp/xp_main.c b/drivers/misc/sgi-xp/xp_main.c
index 9a2e77172d9..16f8dcab2da 100644
--- a/drivers/misc/sgi-xp/xp_main.c
+++ b/drivers/misc/sgi-xp/xp_main.c
@@ -25,7 +25,7 @@ struct device_driver xp_dbg_name = {
 };
 
 struct device xp_dbg_subname = {
-	.bus_id = {0},		/* set to "" */
+	.init_name = "",		/* set to "" */
 	.driver = &xp_dbg_name
 };
 
diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
index e8d5cfbd32c..89218f7cfaa 100644
--- a/drivers/misc/sgi-xp/xpc_main.c
+++ b/drivers/misc/sgi-xp/xpc_main.c
@@ -59,12 +59,12 @@ struct device_driver xpc_dbg_name = {
 };
 
 struct device xpc_part_dbg_subname = {
-	.bus_id = {0},		/* set to "part" at xpc_init() time */
+	.init_name = "",	/* set to "part" at xpc_init() time */
 	.driver = &xpc_dbg_name
 };
 
 struct device xpc_chan_dbg_subname = {
-	.bus_id = {0},		/* set to "chan" at xpc_init() time */
+	.init_name = "",	/* set to "chan" at xpc_init() time */
 	.driver = &xpc_dbg_name
 };
 
@@ -1258,8 +1258,8 @@ xpc_init(void)
 	int ret;
 	struct task_struct *kthread;
 
-	snprintf(xpc_part->bus_id, BUS_ID_SIZE, "part");
-	snprintf(xpc_chan->bus_id, BUS_ID_SIZE, "chan");
+	dev_set_name(xpc_part, "part");
+	dev_set_name(xpc_chan, "chan");
 
 	if (is_shub()) {
 		/*
diff --git a/drivers/misc/sgi-xp/xpnet.c b/drivers/misc/sgi-xp/xpnet.c
index 8e6aa9508f4..81152b3e360 100644
--- a/drivers/misc/sgi-xp/xpnet.c
+++ b/drivers/misc/sgi-xp/xpnet.c
@@ -138,7 +138,7 @@ struct device_driver xpnet_dbg_name = {
 };
 
 struct device xpnet_dbg_subname = {
-	.bus_id = {0},		/* set to "" */
+	.init_name = "",	/* set to "" */
 	.driver = &xpnet_dbg_name
 };
 

From 4bfe090b0a29258eeeb026a09a96cf5b5838ac63 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:37 -0800
Subject: [PATCH 32/60] serial: struct device - replace bus_id with dev_name(),
 dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/serial/serial_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index dc68b7e0c93..42f4e66fcca 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -2030,7 +2030,7 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *port)
 		if (!tries)
 			printk(KERN_ERR "%s%s%s%d: Unable to drain "
 					"transmitter\n",
-			       port->dev ? port->dev->bus_id : "",
+			       port->dev ? dev_name(port->dev) : "",
 			       port->dev ? ": " : "",
 			       drv->dev_name,
 			       drv->tty_driver->name_base + port->line);
@@ -2156,7 +2156,7 @@ uart_report_port(struct uart_driver *drv, struct uart_port *port)
 	}
 
 	printk(KERN_INFO "%s%s%s%d at %s (irq = %d) is a %s\n",
-	       port->dev ? port->dev->bus_id : "",
+	       port->dev ? dev_name(port->dev) : "",
 	       port->dev ? ": " : "",
 	       drv->dev_name,
 	       drv->tty_driver->name_base + port->line,

From ba88b0029fcdc39d23acd4d0e64b38145ffa4d5f Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:38 -0800
Subject: [PATCH 33/60] power-supply: struct device - replace bus_id with
 dev_name(), dev_set_name()

CC: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/power/ds2760_battery.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index 308ddb201b6..1d768928e0b 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -354,7 +354,7 @@ static int ds2760_battery_probe(struct platform_device *pdev)
 	pdata = pdev->dev.platform_data;
 	di->dev		= &pdev->dev;
 	di->w1_dev	     = pdev->dev.parent;
-	di->bat.name	   = pdev->dev.bus_id;
+	di->bat.name	   = dev_name(&pdev->dev);
 	di->bat.type	   = POWER_SUPPLY_TYPE_BATTERY;
 	di->bat.properties     = ds2760_battery_props;
 	di->bat.num_properties = ARRAY_SIZE(ds2760_battery_props);
@@ -371,7 +371,7 @@ static int ds2760_battery_probe(struct platform_device *pdev)
 	}
 
 	INIT_DELAYED_WORK(&di->monitor_work, ds2760_battery_work);
-	di->monitor_wqueue = create_singlethread_workqueue(pdev->dev.bus_id);
+	di->monitor_wqueue = create_singlethread_workqueue(dev_name(&pdev->dev));
 	if (!di->monitor_wqueue) {
 		retval = -ESRCH;
 		goto workqueue_failed;

From c85e37c51e7feecbe758e16ecaaa55cea1682e47 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:38 -0800
Subject: [PATCH 34/60] pnp: struct device - replace bus_id with dev_name(),
 dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/pnp/card.c   | 7 +++----
 drivers/pnp/core.c   | 5 ++---
 drivers/pnp/system.c | 2 +-
 3 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c
index e75b060daa9..efea128f02d 100644
--- a/drivers/pnp/card.c
+++ b/drivers/pnp/card.c
@@ -165,8 +165,7 @@ struct pnp_card *pnp_alloc_card(struct pnp_protocol *protocol, int id, char *pnp
 	card->number = id;
 
 	card->dev.parent = &card->protocol->dev;
-	sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number,
-		card->number);
+	dev_set_name(&card->dev, "%02x:%02x", card->protocol->number, card->number);
 
 	card->dev.coherent_dma_mask = DMA_24BIT_MASK;
 	card->dev.dma_mask = &card->dev.coherent_dma_mask;
@@ -295,8 +294,8 @@ int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev)
 {
 	dev->dev.parent = &card->dev;
 	dev->card_link = NULL;
-	snprintf(dev->dev.bus_id, BUS_ID_SIZE, "%02x:%02x.%02x",
-		 dev->protocol->number, card->number, dev->number);
+	dev_set_name(&dev->dev, "%02x:%02x.%02x",
+		     dev->protocol->number, card->number, dev->number);
 	spin_lock(&pnp_lock);
 	dev->card = card;
 	list_add_tail(&dev->card_list, &card->devices);
diff --git a/drivers/pnp/core.c b/drivers/pnp/core.c
index 16c01c6fa7c..14814f23173 100644
--- a/drivers/pnp/core.c
+++ b/drivers/pnp/core.c
@@ -70,7 +70,7 @@ int pnp_register_protocol(struct pnp_protocol *protocol)
 	spin_unlock(&pnp_lock);
 
 	protocol->number = nodenum;
-	sprintf(protocol->dev.bus_id, "pnp%d", nodenum);
+	dev_set_name(&protocol->dev, "pnp%d", nodenum);
 	return device_register(&protocol->dev);
 }
 
@@ -145,8 +145,7 @@ struct pnp_dev *pnp_alloc_dev(struct pnp_protocol *protocol, int id, char *pnpid
 	dev->dev.coherent_dma_mask = dev->dma_mask;
 	dev->dev.release = &pnp_release_device;
 
-	sprintf(dev->dev.bus_id, "%02x:%02x", dev->protocol->number,
-		dev->number);
+	dev_set_name(&dev->dev, "%02x:%02x", dev->protocol->number, dev->number);
 
 	dev_id = pnp_add_id(dev, pnpid);
 	if (!dev_id) {
diff --git a/drivers/pnp/system.c b/drivers/pnp/system.c
index 764f3a31068..59b90922da8 100644
--- a/drivers/pnp/system.c
+++ b/drivers/pnp/system.c
@@ -26,7 +26,7 @@ static void reserve_range(struct pnp_dev *dev, resource_size_t start,
 			  resource_size_t end, int port)
 {
 	char *regionid;
-	const char *pnpid = dev->dev.bus_id;
+	const char *pnpid = dev_name(&dev->dev);
 	struct resource *res;
 
 	regionid = kmalloc(16, GFP_KERNEL);

From 24d254759dc4eb59b47317790c05569f732a2577 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:38 -0800
Subject: [PATCH 35/60] mwave: struct device - replace bus_id with dev_name(),
 dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/char/mwave/mwavedd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c
index 4f8d67fed29..94ad2c3bfc4 100644
--- a/drivers/char/mwave/mwavedd.c
+++ b/drivers/char/mwave/mwavedd.c
@@ -663,7 +663,7 @@ static int __init mwave_init(void)
 #if 0
 	/* sysfs */
 	memset(&mwave_device, 0, sizeof (struct device));
-	snprintf(mwave_device.bus_id, BUS_ID_SIZE, "mwave");
+	dev_set_name(&mwave_device, "mwave");
 
 	if (device_register(&mwave_device))
 		goto cleanup_error;

From 475b44c19913b877537c8bc19799f75b0b142641 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:38 -0800
Subject: [PATCH 36/60] mtd: struct device - replace bus_id with dev_name(),
 dev_set_name()

CC: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/mtd/devices/m25p80.c        | 16 +++++++--------
 drivers/mtd/devices/mtd_dataflash.c | 30 ++++++++++++++---------------
 drivers/mtd/maps/integrator-flash.c |  2 +-
 drivers/mtd/maps/ixp2000.c          |  4 ++--
 drivers/mtd/maps/ixp4xx.c           |  2 +-
 drivers/mtd/maps/omap_nor.c         |  2 +-
 drivers/mtd/maps/physmap.c          |  6 +++---
 drivers/mtd/maps/physmap_of.c       |  4 ++--
 drivers/mtd/mtdconcat.c             |  2 +-
 drivers/mtd/nand/fsl_upm.c          |  2 +-
 drivers/mtd/nand/plat_nand.c        |  2 +-
 drivers/mtd/nand/tmio_nand.c        |  2 +-
 drivers/mtd/onenand/generic.c       |  2 +-
 drivers/mtd/onenand/omap2.c         |  2 +-
 drivers/mtd/ubi/build.c             |  2 +-
 drivers/mtd/ubi/vmt.c               |  4 ++--
 include/linux/mtd/concat.h          |  2 +-
 17 files changed, 43 insertions(+), 43 deletions(-)

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 6659b2275c0..5733f064384 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -170,7 +170,7 @@ static int wait_till_ready(struct m25p *flash)
 static int erase_chip(struct m25p *flash)
 {
 	DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %dKiB\n",
-			flash->spi->dev.bus_id, __func__,
+			dev_name(&flash->spi->dev), __func__,
 			flash->mtd.size / 1024);
 
 	/* Wait until finished previous write command. */
@@ -197,7 +197,7 @@ static int erase_chip(struct m25p *flash)
 static int erase_sector(struct m25p *flash, u32 offset)
 {
 	DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %dKiB at 0x%08x\n",
-			flash->spi->dev.bus_id, __func__,
+			dev_name(&flash->spi->dev), __func__,
 			flash->mtd.erasesize / 1024, offset);
 
 	/* Wait until finished previous write command. */
@@ -234,7 +234,7 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr)
 	u32 addr,len;
 
 	DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %d\n",
-			flash->spi->dev.bus_id, __func__, "at",
+			dev_name(&flash->spi->dev), __func__, "at",
 			(u32)instr->addr, instr->len);
 
 	/* sanity checks */
@@ -295,7 +295,7 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len,
 	struct spi_message m;
 
 	DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %zd\n",
-			flash->spi->dev.bus_id, __func__, "from",
+			dev_name(&flash->spi->dev), __func__, "from",
 			(u32)from, len);
 
 	/* sanity checks */
@@ -367,7 +367,7 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len,
 	struct spi_message m;
 
 	DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %zd\n",
-			flash->spi->dev.bus_id, __func__, "to",
+			dev_name(&flash->spi->dev), __func__, "to",
 			(u32)to, len);
 
 	if (retlen)
@@ -563,7 +563,7 @@ static struct flash_info *__devinit jedec_probe(struct spi_device *spi)
 	tmp = spi_write_then_read(spi, &code, 1, id, 5);
 	if (tmp < 0) {
 		DEBUG(MTD_DEBUG_LEVEL0, "%s: error %d reading JEDEC ID\n",
-			spi->dev.bus_id, tmp);
+			dev_name(&spi->dev), tmp);
 		return NULL;
 	}
 	jedec = id[0];
@@ -617,7 +617,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
 		/* unrecognized chip? */
 		if (i == ARRAY_SIZE(m25p_data)) {
 			DEBUG(MTD_DEBUG_LEVEL0, "%s: unrecognized id %s\n",
-					spi->dev.bus_id, data->type);
+					dev_name(&spi->dev), data->type);
 			info = NULL;
 
 		/* recognized; is that chip really what's there? */
@@ -658,7 +658,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
 	if (data && data->name)
 		flash->mtd.name = data->name;
 	else
-		flash->mtd.name = spi->dev.bus_id;
+		flash->mtd.name = dev_name(&spi->dev);
 
 	flash->mtd.type = MTD_NORFLASH;
 	flash->mtd.writesize = 1;
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index 6dd9aff8bb2..65126cd668f 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -128,7 +128,7 @@ static int dataflash_waitready(struct spi_device *spi)
 		status = dataflash_status(spi);
 		if (status < 0) {
 			DEBUG(MTD_DEBUG_LEVEL1, "%s: status %d?\n",
-					spi->dev.bus_id, status);
+					dev_name(&spi->dev), status);
 			status = 0;
 		}
 
@@ -154,7 +154,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
 	uint8_t			*command;
 
 	DEBUG(MTD_DEBUG_LEVEL2, "%s: erase addr=0x%x len 0x%x\n",
-			spi->dev.bus_id,
+			dev_name(&spi->dev),
 			instr->addr, instr->len);
 
 	/* Sanity checks */
@@ -197,7 +197,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
 
 		if (status < 0) {
 			printk(KERN_ERR "%s: erase %x, err %d\n",
-				spi->dev.bus_id, pageaddr, status);
+				dev_name(&spi->dev), pageaddr, status);
 			/* REVISIT:  can retry instr->retries times; or
 			 * giveup and instr->fail_addr = instr->addr;
 			 */
@@ -239,7 +239,7 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len,
 	int			status;
 
 	DEBUG(MTD_DEBUG_LEVEL2, "%s: read 0x%x..0x%x\n",
-		priv->spi->dev.bus_id, (unsigned)from, (unsigned)(from + len));
+		dev_name(&priv->spi->dev), (unsigned)from, (unsigned)(from + len));
 
 	*retlen = 0;
 
@@ -288,7 +288,7 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len,
 		status = 0;
 	} else
 		DEBUG(MTD_DEBUG_LEVEL1, "%s: read %x..%x --> %d\n",
-			priv->spi->dev.bus_id,
+			dev_name(&priv->spi->dev),
 			(unsigned)from, (unsigned)(from + len),
 			status);
 	return status;
@@ -315,7 +315,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len,
 	uint8_t			*command;
 
 	DEBUG(MTD_DEBUG_LEVEL2, "%s: write 0x%x..0x%x\n",
-		spi->dev.bus_id, (unsigned)to, (unsigned)(to + len));
+		dev_name(&spi->dev), (unsigned)to, (unsigned)(to + len));
 
 	*retlen = 0;
 
@@ -374,7 +374,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len,
 			status = spi_sync(spi, &msg);
 			if (status < 0)
 				DEBUG(MTD_DEBUG_LEVEL1, "%s: xfer %u -> %d \n",
-					spi->dev.bus_id, addr, status);
+					dev_name(&spi->dev), addr, status);
 
 			(void) dataflash_waitready(priv->spi);
 		}
@@ -396,7 +396,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len,
 		spi_transfer_del(x + 1);
 		if (status < 0)
 			DEBUG(MTD_DEBUG_LEVEL1, "%s: pgm %u/%u -> %d \n",
-				spi->dev.bus_id, addr, writelen, status);
+				dev_name(&spi->dev), addr, writelen, status);
 
 		(void) dataflash_waitready(priv->spi);
 
@@ -416,14 +416,14 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len,
 		status = spi_sync(spi, &msg);
 		if (status < 0)
 			DEBUG(MTD_DEBUG_LEVEL1, "%s: compare %u -> %d \n",
-				spi->dev.bus_id, addr, status);
+				dev_name(&spi->dev), addr, status);
 
 		status = dataflash_waitready(priv->spi);
 
 		/* Check result of the compare operation */
 		if (status & (1 << 6)) {
 			printk(KERN_ERR "%s: compare page %u, err %d\n",
-				spi->dev.bus_id, pageaddr, status);
+				dev_name(&spi->dev), pageaddr, status);
 			remaining = 0;
 			status = -EIO;
 			break;
@@ -779,7 +779,7 @@ static struct flash_info *__devinit jedec_probe(struct spi_device *spi)
 	tmp = spi_write_then_read(spi, &code, 1, id, 3);
 	if (tmp < 0) {
 		DEBUG(MTD_DEBUG_LEVEL0, "%s: error %d reading JEDEC ID\n",
-			spi->dev.bus_id, tmp);
+			dev_name(&spi->dev), tmp);
 		return ERR_PTR(tmp);
 	}
 	if (id[0] != 0x1f)
@@ -869,7 +869,7 @@ static int __devinit dataflash_probe(struct spi_device *spi)
 	status = dataflash_status(spi);
 	if (status <= 0 || status == 0xff) {
 		DEBUG(MTD_DEBUG_LEVEL1, "%s: status error %d\n",
-				spi->dev.bus_id, status);
+				dev_name(&spi->dev), status);
 		if (status == 0 || status == 0xff)
 			status = -ENODEV;
 		return status;
@@ -905,13 +905,13 @@ static int __devinit dataflash_probe(struct spi_device *spi)
 	/* obsolete AT45DB1282 not (yet?) supported */
 	default:
 		DEBUG(MTD_DEBUG_LEVEL1, "%s: unsupported device (%x)\n",
-				spi->dev.bus_id, status & 0x3c);
+				dev_name(&spi->dev), status & 0x3c);
 		status = -ENODEV;
 	}
 
 	if (status < 0)
 		DEBUG(MTD_DEBUG_LEVEL1, "%s: add_dataflash --> %d\n",
-				spi->dev.bus_id, status);
+				dev_name(&spi->dev), status);
 
 	return status;
 }
@@ -921,7 +921,7 @@ static int __devexit dataflash_remove(struct spi_device *spi)
 	struct dataflash	*flash = dev_get_drvdata(&spi->dev);
 	int			status;
 
-	DEBUG(MTD_DEBUG_LEVEL1, "%s: remove\n", spi->dev.bus_id);
+	DEBUG(MTD_DEBUG_LEVEL1, "%s: remove\n", dev_name(&spi->dev));
 
 	if (mtd_has_partitions() && flash->partitioned)
 		status = del_mtd_partitions(&flash->mtd);
diff --git a/drivers/mtd/maps/integrator-flash.c b/drivers/mtd/maps/integrator-flash.c
index 7100ee3c7b0..d2ec262666c 100644
--- a/drivers/mtd/maps/integrator-flash.c
+++ b/drivers/mtd/maps/integrator-flash.c
@@ -105,7 +105,7 @@ static int armflash_probe(struct platform_device *dev)
 	info->map.bankwidth	= plat->width;
 	info->map.phys		= res->start;
 	info->map.virt		= base;
-	info->map.name		= dev->dev.bus_id;
+	info->map.name		= dev_name(&dev->dev);
 	info->map.set_vpp	= armflash_set_vpp;
 
 	simple_map_init(&info->map);
diff --git a/drivers/mtd/maps/ixp2000.c b/drivers/mtd/maps/ixp2000.c
index 3ea1de9be72..d4fb9a3ab4d 100644
--- a/drivers/mtd/maps/ixp2000.c
+++ b/drivers/mtd/maps/ixp2000.c
@@ -188,7 +188,7 @@ static int ixp2000_flash_probe(struct platform_device *dev)
  	 */
 	info->map.map_priv_2 = (unsigned long) ixp_data->bank_setup;
 
-	info->map.name = dev->dev.bus_id;
+	info->map.name = dev_name(&dev->dev);
 	info->map.read = ixp2000_flash_read8;
 	info->map.write = ixp2000_flash_write8;
 	info->map.copy_from = ixp2000_flash_copy_from;
@@ -196,7 +196,7 @@ static int ixp2000_flash_probe(struct platform_device *dev)
 
 	info->res = request_mem_region(dev->resource->start,
 			dev->resource->end - dev->resource->start + 1,
-			dev->dev.bus_id);
+			dev_name(&dev->dev));
 	if (!info->res) {
 		dev_err(&dev->dev, "Could not reserve memory region\n");
 		err = -ENOMEM;
diff --git a/drivers/mtd/maps/ixp4xx.c b/drivers/mtd/maps/ixp4xx.c
index 16555cbeaea..7214b876feb 100644
--- a/drivers/mtd/maps/ixp4xx.c
+++ b/drivers/mtd/maps/ixp4xx.c
@@ -218,7 +218,7 @@ static int ixp4xx_flash_probe(struct platform_device *dev)
 	 * handle that.
 	 */
 	info->map.bankwidth = 2;
-	info->map.name = dev->dev.bus_id;
+	info->map.name = dev_name(&dev->dev);
 	info->map.read = ixp4xx_read16,
 	info->map.write = ixp4xx_probe_write16,
 	info->map.copy_from = ixp4xx_copy_from,
diff --git a/drivers/mtd/maps/omap_nor.c b/drivers/mtd/maps/omap_nor.c
index 05f276af15d..7e50e9b1b78 100644
--- a/drivers/mtd/maps/omap_nor.c
+++ b/drivers/mtd/maps/omap_nor.c
@@ -101,7 +101,7 @@ static int __init omapflash_probe(struct platform_device *pdev)
 		err = -ENOMEM;
 		goto out_release_mem_region;
 	}
-	info->map.name		= pdev->dev.bus_id;
+	info->map.name		= dev_name(&pdev->dev);
 	info->map.phys		= res->start;
 	info->map.size		= size;
 	info->map.bankwidth	= pdata->width;
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index dfbf3f270ce..1db16e549e3 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -108,13 +108,13 @@ static int physmap_flash_probe(struct platform_device *dev)
 		if (!devm_request_mem_region(&dev->dev,
 			dev->resource[i].start,
 			dev->resource[i].end - dev->resource[i].start + 1,
-			dev->dev.bus_id)) {
+			dev_name(&dev->dev))) {
 			dev_err(&dev->dev, "Could not reserve memory region\n");
 			err = -ENOMEM;
 			goto err_out;
 		}
 
-		info->map[i].name = dev->dev.bus_id;
+		info->map[i].name = dev_name(&dev->dev);
 		info->map[i].phys = dev->resource[i].start;
 		info->map[i].size = dev->resource[i].end - dev->resource[i].start + 1;
 		info->map[i].bankwidth = physmap_data->width;
@@ -150,7 +150,7 @@ static int physmap_flash_probe(struct platform_device *dev)
 		 * We detected multiple devices. Concatenate them together.
 		 */
 #ifdef CONFIG_MTD_CONCAT
-		info->cmtd = mtd_concat_create(info->mtd, devices_found, dev->dev.bus_id);
+		info->cmtd = mtd_concat_create(info->mtd, devices_found, dev_name(&dev->dev));
 		if (info->cmtd == NULL)
 			err = -ENXIO;
 #else
diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c
index 5fcfec034a9..fbf0ca939d7 100644
--- a/drivers/mtd/maps/physmap_of.c
+++ b/drivers/mtd/maps/physmap_of.c
@@ -183,7 +183,7 @@ static int __devinit of_flash_probe(struct of_device *dev,
 
 	err = -EBUSY;
 	info->res = request_mem_region(res.start, res.end - res.start + 1,
-				       dev->dev.bus_id);
+				       dev_name(&dev->dev));
 	if (!info->res)
 		goto err_out;
 
@@ -194,7 +194,7 @@ static int __devinit of_flash_probe(struct of_device *dev,
 		goto err_out;
 	}
 
-	info->map.name = dev->dev.bus_id;
+	info->map.name = dev_name(&dev->dev);
 	info->map.phys = res.start;
 	info->map.size = res.end - res.start + 1;
 	info->map.bankwidth = *width;
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index 789842d0e6f..1a05cf37851 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -691,7 +691,7 @@ static int concat_block_markbad(struct mtd_info *mtd, loff_t ofs)
  */
 struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to concatenate */
 				   int num_devs,	/* number of subdevices      */
-				   char *name)
+				   const char *name)
 {				/* name for the new device   */
 	int i;
 	size_t size;
diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c
index a83192f80eb..7815a404a63 100644
--- a/drivers/mtd/nand/fsl_upm.c
+++ b/drivers/mtd/nand/fsl_upm.c
@@ -222,7 +222,7 @@ static int __devinit fun_probe(struct of_device *ofdev,
 
 	fun->rnb_gpio = of_get_gpio(ofdev->node, 0);
 	if (fun->rnb_gpio >= 0) {
-		ret = gpio_request(fun->rnb_gpio, ofdev->dev.bus_id);
+		ret = gpio_request(fun->rnb_gpio, dev_name(&ofdev->dev));
 		if (ret) {
 			dev_err(&ofdev->dev, "can't request RNB gpio\n");
 			goto err2;
diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c
index f674c5427b1..75f9f4874ec 100644
--- a/drivers/mtd/nand/plat_nand.c
+++ b/drivers/mtd/nand/plat_nand.c
@@ -54,7 +54,7 @@ static int __init plat_nand_probe(struct platform_device *pdev)
 	data->chip.priv = &data;
 	data->mtd.priv = &data->chip;
 	data->mtd.owner = THIS_MODULE;
-	data->mtd.name = pdev->dev.bus_id;
+	data->mtd.name = dev_name(&pdev->dev);
 
 	data->chip.IO_ADDR_R = data->io_base;
 	data->chip.IO_ADDR_W = data->io_base;
diff --git a/drivers/mtd/nand/tmio_nand.c b/drivers/mtd/nand/tmio_nand.c
index edb1e322113..daa6a4c3b8c 100644
--- a/drivers/mtd/nand/tmio_nand.c
+++ b/drivers/mtd/nand/tmio_nand.c
@@ -433,7 +433,7 @@ static int tmio_probe(struct platform_device *dev)
 	nand_chip->chip_delay = 15;
 
 	retval = request_irq(irq, &tmio_irq,
-				IRQF_DISABLED, dev->dev.bus_id, tmio);
+				IRQF_DISABLED, dev_name(&dev->dev), tmio);
 	if (retval) {
 		dev_err(&dev->dev, "request_irq error %d\n", retval);
 		goto err_irq;
diff --git a/drivers/mtd/onenand/generic.c b/drivers/mtd/onenand/generic.c
index ad81ab8e95e..5b69e7773c6 100644
--- a/drivers/mtd/onenand/generic.c
+++ b/drivers/mtd/onenand/generic.c
@@ -63,7 +63,7 @@ static int __devinit generic_onenand_probe(struct device *dev)
 	info->onenand.mmcontrol = pdata->mmcontrol;
 	info->onenand.irq = platform_get_irq(pdev, 0);
 
-	info->mtd.name = pdev->dev.bus_id;
+	info->mtd.name = dev_name(&pdev->dev);
 	info->mtd.priv = &info->onenand;
 	info->mtd.owner = THIS_MODULE;
 
diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index d1e0b8e7224..96ecc1766fa 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -668,7 +668,7 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
 		 c->onenand.base);
 
 	c->pdev = pdev;
-	c->mtd.name = pdev->dev.bus_id;
+	c->mtd.name = dev_name(&pdev->dev);
 	c->mtd.priv = &c->onenand;
 	c->mtd.owner = THIS_MODULE;
 
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index ba0bd3d5775..7caf22cd5ad 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -280,7 +280,7 @@ static int ubi_sysfs_init(struct ubi_device *ubi)
 	ubi->dev.release = dev_release;
 	ubi->dev.devt = ubi->cdev.dev;
 	ubi->dev.class = ubi_class;
-	sprintf(&ubi->dev.bus_id[0], UBI_NAME_STR"%d", ubi->ubi_num);
+	dev_set_name(&ubi->dev, UBI_NAME_STR"%d", ubi->ubi_num);
 	err = device_register(&ubi->dev);
 	if (err)
 		return err;
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 3531ca9a1e2..22e1d7398fc 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -329,7 +329,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
 	vol->dev.devt = dev;
 	vol->dev.class = ubi_class;
 
-	sprintf(&vol->dev.bus_id[0], "%s_%d", ubi->ubi_name, vol->vol_id);
+	dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);
 	err = device_register(&vol->dev);
 	if (err) {
 		ubi_err("cannot register device");
@@ -678,7 +678,7 @@ int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol)
 	vol->dev.parent = &ubi->dev;
 	vol->dev.devt = dev;
 	vol->dev.class = ubi_class;
-	sprintf(&vol->dev.bus_id[0], "%s_%d", ubi->ubi_name, vol->vol_id);
+	dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);
 	err = device_register(&vol->dev);
 	if (err)
 		goto out_gluebi;
diff --git a/include/linux/mtd/concat.h b/include/linux/mtd/concat.h
index c02f3d264ec..e80c674daeb 100644
--- a/include/linux/mtd/concat.h
+++ b/include/linux/mtd/concat.h
@@ -13,7 +13,7 @@
 struct mtd_info *mtd_concat_create(
     struct mtd_info *subdev[],  /* subdevices to concatenate */
     int num_devs,               /* number of subdevices      */
-    char *name);                /* name for the new device   */
+    const char *name);          /* name for the new device   */
 
 void mtd_concat_destroy(struct mtd_info *mtd);
 

From 1bb5beb49f8f32c5293cae0695db2492804772a3 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:38 -0800
Subject: [PATCH 37/60] mips: struct device - replace bus_id with dev_name(),
 dev_set_name()

Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/mips/kernel/vpe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 010b27e01f7..3ca5f42e819 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -1454,7 +1454,7 @@ static int __init vpe_module_init(void)
 	device_initialize(&vpe_device);
 	vpe_device.class	= &vpe_class,
 	vpe_device.parent	= NULL,
-	strlcpy(vpe_device.bus_id, "vpe1", BUS_ID_SIZE);
+	dev_set_name(&vpe_device, "vpe1");
 	vpe_device.devt = MKDEV(major, minor);
 	err = device_add(&vpe_device);
 	if (err) {

From 0252c3b4f0188ceb9ce48a340e6bfd17ab28afa7 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:38 -0800
Subject: [PATCH 38/60] memstick: struct device - replace bus_id with
 dev_name(), dev_set_name()

Cc: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/memstick/core/memstick.c    |  5 ++---
 drivers/memstick/core/mspro_block.c | 14 +++++++-------
 drivers/memstick/host/tifm_ms.c     |  4 ++--
 3 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/drivers/memstick/core/memstick.c b/drivers/memstick/core/memstick.c
index cea46906408..a5b448ea4ea 100644
--- a/drivers/memstick/core/memstick.c
+++ b/drivers/memstick/core/memstick.c
@@ -385,8 +385,7 @@ static struct memstick_dev *memstick_alloc_card(struct memstick_host *host)
 
 	if (card) {
 		card->host = host;
-		snprintf(card->dev.bus_id, sizeof(card->dev.bus_id),
-			 "%s", host->dev.bus_id);
+		dev_set_name(&card->dev, "%s", dev_name(&host->dev));
 		card->dev.parent = &host->dev;
 		card->dev.bus = &memstick_bus_type;
 		card->dev.release = memstick_free_card;
@@ -519,7 +518,7 @@ int memstick_add_host(struct memstick_host *host)
 	if (rc)
 		return rc;
 
-	snprintf(host->dev.bus_id, BUS_ID_SIZE, "memstick%u", host->id);
+	dev_set_name(&host->dev, "memstick%u", host->id);
 
 	rc = device_add(&host->dev);
 	if (rc) {
diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index 7911151e56a..1f1e3982b1a 100644
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -887,14 +887,14 @@ try_again:
 	if (rc) {
 		printk(KERN_WARNING
 		       "%s: could not switch to 4-bit mode, error %d\n",
-		       card->dev.bus_id, rc);
+		       dev_name(&card->dev), rc);
 		return 0;
 	}
 
 	msb->system = MEMSTICK_SYS_PAR4;
 	host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
 	printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
-	       card->dev.bus_id);
+	       dev_name(&card->dev));
 
 	if (msb->caps & MEMSTICK_CAP_PAR8) {
 		rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
@@ -905,11 +905,11 @@ try_again:
 					MEMSTICK_PAR8);
 			printk(KERN_INFO
 			       "%s: switching to 8-bit parallel mode\n",
-			       card->dev.bus_id);
+			       dev_name(&card->dev));
 		} else
 			printk(KERN_WARNING
 			       "%s: could not switch to 8-bit mode, error %d\n",
-			       card->dev.bus_id, rc);
+			       dev_name(&card->dev), rc);
 	}
 
 	card->next_request = h_mspro_block_req_init;
@@ -922,7 +922,7 @@ try_again:
 	if (rc) {
 		printk(KERN_WARNING
 		       "%s: interface error, trying to fall back to serial\n",
-		       card->dev.bus_id);
+		       dev_name(&card->dev));
 		msb->system = MEMSTICK_SYS_SERIAL;
 		host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
 		msleep(10);
@@ -992,14 +992,14 @@ static int mspro_block_read_attributes(struct memstick_dev *card)
 
 	if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
 		printk(KERN_ERR "%s: unrecognized device signature %x\n",
-		       card->dev.bus_id, be16_to_cpu(attr->signature));
+		       dev_name(&card->dev), be16_to_cpu(attr->signature));
 		rc = -ENODEV;
 		goto out_free_attr;
 	}
 
 	if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
 		printk(KERN_WARNING "%s: way too many attribute entries\n",
-		       card->dev.bus_id);
+		       dev_name(&card->dev));
 		attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
 	} else
 		attr_count = attr->count;
diff --git a/drivers/memstick/host/tifm_ms.c b/drivers/memstick/host/tifm_ms.c
index d32d6ad8f3f..03f71a431c8 100644
--- a/drivers/memstick/host/tifm_ms.c
+++ b/drivers/memstick/host/tifm_ms.c
@@ -546,7 +546,7 @@ static void tifm_ms_abort(unsigned long data)
 	printk(KERN_ERR
 	       "%s : card failed to respond for a long period of time "
 	       "(%x, %x)\n",
-	       host->dev->dev.bus_id, host->req ? host->req->tpc : 0,
+	       dev_name(&host->dev->dev), host->req ? host->req->tpc : 0,
 	       host->cmd_flags);
 
 	tifm_eject(host->dev);
@@ -561,7 +561,7 @@ static int tifm_ms_probe(struct tifm_dev *sock)
 	if (!(TIFM_SOCK_STATE_OCCUPIED
 	      & readl(sock->addr + SOCK_PRESENT_STATE))) {
 		printk(KERN_WARNING "%s : card gone, unexpectedly\n",
-		       sock->dev.bus_id);
+		       dev_name(&sock->dev));
 		return rc;
 	}
 

From 1d7e6cca1dfd167e5f1e2a7c53119b0c80c90c35 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:39 -0800
Subject: [PATCH 39/60] macintosh: struct device - replace bus_id with
 dev_name(), dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/macintosh/macio_asic.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
index ec9e5f32f0a..6e149f4a1ff 100644
--- a/drivers/macintosh/macio_asic.c
+++ b/drivers/macintosh/macio_asic.c
@@ -33,7 +33,7 @@
 
 #undef DEBUG
 
-#define MAX_NODE_NAME_SIZE (BUS_ID_SIZE - 12)
+#define MAX_NODE_NAME_SIZE (20 - 12)
 
 static struct macio_chip      *macio_on_hold;
 
@@ -240,7 +240,7 @@ static void macio_create_fixup_irq(struct macio_dev *dev, int index,
 	if (irq != NO_IRQ) {
 		dev->interrupt[index].start = irq;
 		dev->interrupt[index].flags = IORESOURCE_IRQ;
-		dev->interrupt[index].name = dev->ofdev.dev.bus_id;
+		dev->interrupt[index].name = dev_name(&dev->ofdev.dev);
 	}
 	if (dev->n_interrupts <= index)
 		dev->n_interrupts = index + 1;
@@ -303,7 +303,7 @@ static void macio_setup_interrupts(struct macio_dev *dev)
 			break;
 		res->start = irq;
 		res->flags = IORESOURCE_IRQ;
-		res->name = dev->ofdev.dev.bus_id;
+		res->name = dev_name(&dev->ofdev.dev);
 		if (macio_resource_quirks(np, res, i - 1)) {
 			memset(res, 0, sizeof(struct resource));
 			continue;
@@ -325,7 +325,7 @@ static void macio_setup_resources(struct macio_dev *dev,
 		if (index >= MACIO_DEV_COUNT_RESOURCES)
 			break;
 		*res = r;
-		res->name = dev->ofdev.dev.bus_id;
+		res->name = dev_name(&dev->ofdev.dev);
 
 		if (macio_resource_quirks(np, res, index)) {
 			memset(res, 0, sizeof(struct resource));
@@ -338,7 +338,7 @@ static void macio_setup_resources(struct macio_dev *dev,
 		if (insert_resource(parent_res, res)) {
 			printk(KERN_WARNING "Can't request resource "
 			       "%d for MacIO device %s\n",
-			       index, dev->ofdev.dev.bus_id);
+			       index, dev_name(&dev->ofdev.dev));
 		}
 	}
 	dev->n_resources = index;
@@ -385,8 +385,8 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
 
 	/* MacIO itself has a different reg, we use it's PCI base */
 	if (np == chip->of_node) {
-		sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s",
-			chip->lbus.index,
+		dev_set_name(&dev->ofdev.dev, "%1d.%08x:%.*s",
+			     chip->lbus.index,
 #ifdef CONFIG_PCI
 			(unsigned int)pci_resource_start(chip->lbus.pdev, 0),
 #else
@@ -395,9 +395,9 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
 			MAX_NODE_NAME_SIZE, np->name);
 	} else {
 		reg = of_get_property(np, "reg", NULL);
-		sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s",
-			chip->lbus.index,
-			reg ? *reg : 0, MAX_NODE_NAME_SIZE, np->name);
+		dev_set_name(&dev->ofdev.dev, "%1d.%08x:%.*s",
+			     chip->lbus.index,
+			     reg ? *reg : 0, MAX_NODE_NAME_SIZE, np->name);
 	}
 
 	/* Setup interrupts & resources */
@@ -408,7 +408,7 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
 	/* Register with core */
 	if (of_device_register(&dev->ofdev) != 0) {
 		printk(KERN_DEBUG"macio: device registration error for %s!\n",
-		       dev->ofdev.dev.bus_id);
+		       dev_name(&dev->ofdev.dev));
 		kfree(dev);
 		return NULL;
 	}
@@ -558,7 +558,7 @@ err_out:
 		resource_no,
 		macio_resource_len(dev, resource_no),
 		macio_resource_start(dev, resource_no),
-		dev->ofdev.dev.bus_id);
+		dev_name(&dev->ofdev.dev));
 	return -EBUSY;
 }
 

From 81ff86a11f54c9e266c6a6bc3ecd2c9a0f1e11cc Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:39 -0800
Subject: [PATCH 40/60] pm: struct device - replace bus_id with dev_name(),
 dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 kernel/power/main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/power/main.c b/kernel/power/main.c
index 613f16941b8..23998887397 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -615,7 +615,7 @@ static void __init test_wakealarm(struct rtc_device *rtc, suspend_state_t state)
 	/* this may fail if the RTC hasn't been initialized */
 	status = rtc_read_time(rtc, &alm.time);
 	if (status < 0) {
-		printk(err_readtime, rtc->dev.bus_id, status);
+		printk(err_readtime, dev_name(&rtc->dev), status);
 		return;
 	}
 	rtc_tm_to_time(&alm.time, &now);
@@ -626,7 +626,7 @@ static void __init test_wakealarm(struct rtc_device *rtc, suspend_state_t state)
 
 	status = rtc_set_alarm(rtc, &alm);
 	if (status < 0) {
-		printk(err_wakealarm, rtc->dev.bus_id, status);
+		printk(err_wakealarm, dev_name(&rtc->dev), status);
 		return;
 	}
 
@@ -660,7 +660,7 @@ static int __init has_wakealarm(struct device *dev, void *name_ptr)
 	if (!device_may_wakeup(candidate->dev.parent))
 		return 0;
 
-	*(char **)name_ptr = dev->bus_id;
+	*(const char **)name_ptr = dev_name(dev);
 	return 1;
 }
 

From 0162f3822c08a2d7021faa6fe93391e7df585856 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:39 -0800
Subject: [PATCH 41/60] ISDN: struct device - replace bus_id with dev_name(),
 dev_set_name()

CC: Karsten Keil <kkeil@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/isdn/mISDN/dsp_pipeline.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/isdn/mISDN/dsp_pipeline.c b/drivers/isdn/mISDN/dsp_pipeline.c
index 5ee6651b45b..83639be7f7a 100644
--- a/drivers/isdn/mISDN/dsp_pipeline.c
+++ b/drivers/isdn/mISDN/dsp_pipeline.c
@@ -91,7 +91,7 @@ int mISDN_dsp_element_register(struct mISDN_dsp_element *elem)
 
 	entry->dev.class = elements_class;
 	dev_set_drvdata(&entry->dev, elem);
-	snprintf(entry->dev.bus_id, BUS_ID_SIZE, elem->name);
+	dev_set_name(&entry->dev, elem->name);
 	ret = device_register(&entry->dev);
 	if (ret) {
 		printk(KERN_ERR "%s: failed to register %s\n",

From d927e38c6c1859494792547beee249c17b43a17e Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:39 -0800
Subject: [PATCH 42/60] infiniband: struct device - replace bus_id with
 dev_name(), dev_set_name()

Acked-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/infiniband/core/sysfs.c     | 2 +-
 drivers/infiniband/core/ucm.c       | 3 +--
 drivers/infiniband/ulp/srp/ib_srp.c | 3 +--
 3 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 4f4d1bb9f06..b43f7d3682d 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -778,7 +778,7 @@ int ib_device_register_sysfs(struct ib_device *device)
 	class_dev->class      = &ib_class;
 	class_dev->driver_data = device;
 	class_dev->parent     = device->dma_device;
-	strlcpy(class_dev->bus_id, device->name, BUS_ID_SIZE);
+	dev_set_name(class_dev, device->name);
 
 	INIT_LIST_HEAD(&device->port_list);
 
diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
index e603736682b..51bd9669cb1 100644
--- a/drivers/infiniband/core/ucm.c
+++ b/drivers/infiniband/core/ucm.c
@@ -1266,8 +1266,7 @@ static void ib_ucm_add_one(struct ib_device *device)
 	ucm_dev->dev.parent = device->dma_device;
 	ucm_dev->dev.devt = ucm_dev->cdev.dev;
 	ucm_dev->dev.release = ib_ucm_release_dev;
-	snprintf(ucm_dev->dev.bus_id, BUS_ID_SIZE, "ucm%d",
-		 ucm_dev->devnum);
+	dev_set_name(&ucm_dev->dev, "ucm%d", ucm_dev->devnum);
 	if (device_register(&ucm_dev->dev))
 		goto err_cdev;
 
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 7c13db885bf..54c8fe25c42 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -1949,8 +1949,7 @@ static struct srp_host *srp_add_port(struct srp_device *device, u8 port)
 
 	host->dev.class = &srp_class;
 	host->dev.parent = device->dev->dma_device;
-	snprintf(host->dev.bus_id, BUS_ID_SIZE, "srp-%s-%d",
-		 device->dev->name, port);
+	dev_set_name(&host->dev, "srp-%s-%d", device->dev->name, port);
 
 	if (device_register(&host->dev))
 		goto free_host;

From 24f81a7047fd3945a551699208bf7851c7de3139 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:39 -0800
Subject: [PATCH 43/60] i7300_idle: struct device - replace bus_id with
 dev_name(), dev_set_name()

CC: Andy Henroid <andrew.d.henroid@intel.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/idle/i7300_idle.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/idle/i7300_idle.c b/drivers/idle/i7300_idle.c
index fb176f6ef9f..17e8ddd0133 100644
--- a/drivers/idle/i7300_idle.c
+++ b/drivers/idle/i7300_idle.c
@@ -177,7 +177,7 @@ static int __init i7300_idle_ioat_selftest(u8 *ctl,
 }
 
 static struct device dummy_dma_dev = {
-	.bus_id = "fallback device",
+	.init_name = "fallback device",
 	.coherent_dma_mask = DMA_64BIT_MASK,
 	.dma_mask = &dummy_dma_dev.coherent_dma_mask,
 };

From 48ef2bb46ce8c2725a171d3afdb0d3563ef2c278 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:40 -0800
Subject: [PATCH 44/60] IA64: struct device - replace bus_id with dev_name(),
 dev_set_name()

Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/ia64/kernel/pci-dma.c  | 2 +-
 arch/ia64/sn/kernel/tiocx.c | 3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c
index 2a92f637431..d0ada067a4a 100644
--- a/arch/ia64/kernel/pci-dma.c
+++ b/arch/ia64/kernel/pci-dma.c
@@ -39,7 +39,7 @@ int iommu_detected __read_mostly;
    be probably a smaller DMA mask, but this is bug-to-bug compatible
    to i386. */
 struct device fallback_dev = {
-	.bus_id = "fallback device",
+	.init_name = "fallback device",
 	.coherent_dma_mask = DMA_32BIT_MASK,
 	.dma_mask = &fallback_dev.coherent_dma_mask,
 };
diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
index a88eba3314d..3f864238566 100644
--- a/arch/ia64/sn/kernel/tiocx.c
+++ b/arch/ia64/sn/kernel/tiocx.c
@@ -206,8 +206,7 @@ cx_device_register(nasid_t nasid, int part_num, int mfg_num,
 	cx_dev->dev.parent = NULL;
 	cx_dev->dev.bus = &tiocx_bus_type;
 	cx_dev->dev.release = tiocx_bus_release;
-	snprintf(cx_dev->dev.bus_id, BUS_ID_SIZE, "%d",
-		 cx_dev->cx_id.nasid);
+	dev_set_name(&cx_dev->dev, "%d", cx_dev->cx_id.nasid);
 	device_register(&cx_dev->dev);
 	get_device(&cx_dev->dev);
 

From cd3ed6b4dd9e20aacaa5bd957ce1a65c90a0cbc4 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:40 -0800
Subject: [PATCH 45/60] i2o: struct device - replace bus_id with dev_name(),
 dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/message/i2o/device.c   | 8 ++++----
 drivers/message/i2o/i2o_proc.c | 2 +-
 drivers/message/i2o/iop.c      | 2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/message/i2o/device.c b/drivers/message/i2o/device.c
index 54c2e9ae23e..a7dd03e8d33 100644
--- a/drivers/message/i2o/device.c
+++ b/drivers/message/i2o/device.c
@@ -134,7 +134,7 @@ static void i2o_device_release(struct device *dev)
 {
 	struct i2o_device *i2o_dev = to_i2o_device(dev);
 
-	pr_debug("i2o: device %s released\n", dev->bus_id);
+	pr_debug("i2o: device %s released\n", dev_name(dev));
 
 	kfree(i2o_dev);
 }
@@ -229,8 +229,8 @@ static int i2o_device_add(struct i2o_controller *c, i2o_lct_entry *entry)
 
 	i2o_dev->lct_data = *entry;
 
-	snprintf(i2o_dev->device.bus_id, BUS_ID_SIZE, "%d:%03x", c->unit,
-		 i2o_dev->lct_data.tid);
+	dev_set_name(&i2o_dev->device, "%d:%03x", c->unit,
+		     i2o_dev->lct_data.tid);
 
 	i2o_dev->iop = c;
 	i2o_dev->device.parent = &c->device;
@@ -281,7 +281,7 @@ static int i2o_device_add(struct i2o_controller *c, i2o_lct_entry *entry)
 
 	i2o_driver_notify_device_add_all(i2o_dev);
 
-	pr_debug("i2o: device %s added\n", i2o_dev->device.bus_id);
+	pr_debug("i2o: device %s added\n", dev_name(&i2o_dev->device));
 
 	return 0;
 
diff --git a/drivers/message/i2o/i2o_proc.c b/drivers/message/i2o/i2o_proc.c
index 54a3016ff45..9a36b5a7de5 100644
--- a/drivers/message/i2o/i2o_proc.c
+++ b/drivers/message/i2o/i2o_proc.c
@@ -1300,7 +1300,7 @@ static int i2o_seq_show_dev_name(struct seq_file *seq, void *v)
 {
 	struct i2o_device *d = (struct i2o_device *)seq->private;
 
-	seq_printf(seq, "%s\n", d->device.bus_id);
+	seq_printf(seq, "%s\n", dev_name(&d->device));
 
 	return 0;
 }
diff --git a/drivers/message/i2o/iop.c b/drivers/message/i2o/iop.c
index 35c67d1f255..27cf4af0e13 100644
--- a/drivers/message/i2o/iop.c
+++ b/drivers/message/i2o/iop.c
@@ -1072,7 +1072,7 @@ struct i2o_controller *i2o_iop_alloc(void)
 
 	c->device.release = &i2o_iop_release;
 
-	snprintf(c->device.bus_id, BUS_ID_SIZE, "iop%d", c->unit);
+	dev_set_name(&c->device, "iop%d", c->unit);
 
 #if BITS_PER_LONG == 64
 	spin_lock_init(&c->context_list_lock);

From 739cf3a2691951a2d68baa275201a7e931fd50e9 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:41 -0800
Subject: [PATCH 46/60] hwmon: struct device - replace bus_id with dev_name(),
 dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/hwmon/hwmon.c | 2 +-
 drivers/hwmon/lm75.c  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index 076a59cdabe..e15c3e7b07e 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -76,7 +76,7 @@ void hwmon_device_unregister(struct device *dev)
 {
 	int id;
 
-	if (likely(sscanf(dev->bus_id, HWMON_ID_FORMAT, &id) == 1)) {
+	if (likely(sscanf(dev_name(dev), HWMON_ID_FORMAT, &id) == 1)) {
 		device_unregister(dev);
 		spin_lock(&idr_lock);
 		idr_remove(&hwmon_idr, id);
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 8f9595f2fb5..55bd87c15c9 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -190,7 +190,7 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	}
 
 	dev_info(&client->dev, "%s: sensor '%s'\n",
-		data->hwmon_dev->bus_id, client->name);
+		 dev_name(data->hwmon_dev), client->name);
 
 	return 0;
 

From 8f4bbd9f59a6ec0d96ae374ea2a46bfa90cc26e4 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:41 -0800
Subject: [PATCH 47/60] gpu: struct device - replace bus_id with dev_name(),
 dev_set_name()

CC: Dave Airlie <airlied@redhat.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/gpu/drm/drm_sysfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 65d72d094c8..5aa6780652a 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -488,7 +488,7 @@ int drm_sysfs_device_add(struct drm_minor *minor)
         else
                 minor_str = "card%d";
 
-	snprintf(minor->kdev.bus_id, BUS_ID_SIZE, minor_str, minor->index);
+	dev_set_name(&minor->kdev, minor_str, minor->index);
 
 	err = device_register(&minor->kdev);
 	if (err) {

From 14ab309d33efda7b78bad1d331fd1963ed3bd906 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:42 -0800
Subject: [PATCH 48/60] gpio: struct device - replace bus_id with dev_name(),
 dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/gpio/gpiolib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 82020abc329..35e7aea4222 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1213,7 +1213,7 @@ static int gpiolib_show(struct seq_file *s, void *unused)
 		if (dev)
 			seq_printf(s, ", %s/%s",
 				dev->bus ? dev->bus->name : "no-bus",
-				dev->bus_id);
+				dev_name(dev));
 		if (chip->label)
 			seq_printf(s, ", %s", chip->label);
 		if (chip->can_sleep)

From c682b17060788ace1abaeb080358ef7b62b1f541 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:42 -0800
Subject: [PATCH 49/60] gadget: struct device - replace bus_id with dev_name(),
 dev_set_name()

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/gadget/at91_udc.c       | 2 +-
 drivers/usb/gadget/atmel_usba_udc.c | 2 +-
 drivers/usb/gadget/fsl_qe_udc.c     | 2 +-
 drivers/usb/gadget/lh7a40x_udc.c    | 2 +-
 drivers/usb/gadget/pxa25x_udc.c     | 2 +-
 drivers/usb/gadget/pxa27x_udc.c     | 2 +-
 drivers/usb/gadget/s3c2410_udc.c    | 2 +-
 7 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index a8a1de41332..0b2bb8f0706 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -1474,7 +1474,7 @@ static struct at91_udc controller = {
 		.ep0	= &controller.ep[0].ep,
 		.name	= driver_name,
 		.dev	= {
-			.bus_id = "gadget",
+			.init_name = "gadget",
 			.release = nop_release,
 		}
 	},
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index ae30ab1d264..65b03e3445a 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -1034,7 +1034,7 @@ static struct usba_udc the_udc = {
 		.is_dualspeed	= 1,
 		.name		= "atmel_usba_udc",
 		.dev	= {
-			.bus_id		= "gadget",
+			.init_name	= "gadget",
 			.release	= nop_release,
 		},
 	},
diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c
index b3408ff39fb..f4027256509 100644
--- a/drivers/usb/gadget/fsl_qe_udc.c
+++ b/drivers/usb/gadget/fsl_qe_udc.c
@@ -2545,7 +2545,7 @@ static int __devinit qe_udc_probe(struct of_device *ofdev,
 
 	device_initialize(&udc_controller->gadget.dev);
 
-	strcpy(udc_controller->gadget.dev.bus_id, "gadget");
+	dev_set_name(&udc_controller->gadget.dev, "gadget");
 
 	udc_controller->gadget.dev.release = qe_udc_release;
 	udc_controller->gadget.dev.parent = &ofdev->dev;
diff --git a/drivers/usb/gadget/lh7a40x_udc.c b/drivers/usb/gadget/lh7a40x_udc.c
index c6e7df04c69..d554b089560 100644
--- a/drivers/usb/gadget/lh7a40x_udc.c
+++ b/drivers/usb/gadget/lh7a40x_udc.c
@@ -1981,7 +1981,7 @@ static struct lh7a40x_udc memory = {
 		   .ep0 = &memory.ep[0].ep,
 		   .name = driver_name,
 		   .dev = {
-			   .bus_id = "gadget",
+			   .init_name = "gadget",
 			   .release = nop_release,
 			   },
 		   },
diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c
index 8c5026be79d..697a0ca349b 100644
--- a/drivers/usb/gadget/pxa25x_udc.c
+++ b/drivers/usb/gadget/pxa25x_udc.c
@@ -1833,7 +1833,7 @@ static struct pxa25x_udc memory = {
 		.ep0		= &memory.ep[0].ep,
 		.name		= driver_name,
 		.dev = {
-			.bus_id		= "gadget",
+			.init_name	= "gadget",
 			.release	= nop_release,
 		},
 	},
diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index 944e4ff641d..65110d02a20 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -2162,7 +2162,7 @@ static struct pxa_udc memory = {
 		.ep0		= &memory.udc_usb_ep[0].usb_ep,
 		.name		= driver_name,
 		.dev = {
-			.bus_id		= "gadget",
+			.init_name	= "gadget",
 		},
 	},
 
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index 8d8d6516598..c7e25563680 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -1727,7 +1727,7 @@ static struct s3c2410_udc memory = {
 		.ep0		= &memory.ep[0].ep,
 		.name		= gadget_name,
 		.dev = {
-			.bus_id		= "gadget",
+			.init_name	= "gadget",
 		},
 	},
 

From 6ff4dd36d6386f6fb3e1e4eac56f0d22d59a1d5c Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:42 -0800
Subject: [PATCH 50/60] dmi: struct device - replace bus_id with dev_name(),
 dev_set_name()

CC: Lennart Poettering <mzxreary@0pointer.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/firmware/dmi-id.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c
index e880d6c8d89..5a76d056b9d 100644
--- a/drivers/firmware/dmi-id.c
+++ b/drivers/firmware/dmi-id.c
@@ -223,7 +223,7 @@ static int __init dmi_id_init(void)
 	}
 
 	dmi_dev->class = &dmi_class;
-	strcpy(dmi_dev->bus_id, "id");
+	dev_set_name(dmi_dev, "id");
 	dmi_dev->groups = sys_dmi_attribute_groups;
 
 	ret = device_register(dmi_dev);

From 4383fc3d9a98759a1ec3c57a30781e95a4cfcfa9 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:42 -0800
Subject: [PATCH 51/60] chris: struct device - replace bus_id with dev_name(),
 dev_set_name()

Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/cris/arch-v32/drivers/iop_fw_load.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/cris/arch-v32/drivers/iop_fw_load.c b/arch/cris/arch-v32/drivers/iop_fw_load.c
index 3b3857ec1f1..2f8ea0f7a63 100644
--- a/arch/cris/arch-v32/drivers/iop_fw_load.c
+++ b/arch/cris/arch-v32/drivers/iop_fw_load.c
@@ -24,12 +24,12 @@
 #error "Please contact <greg@kroah.com> for details on how to fix it properly."
 
 static struct device iop_spu_device[2] = {
-	{ .bus_id =     "iop-spu0", },
-	{ .bus_id =     "iop-spu1", },
+	{ .init_name =     "iop-spu0", },
+	{ .init_name =     "iop-spu1", },
 };
 
 static struct device iop_mpu_device = {
-	.bus_id =       "iop-mpu",
+	.init_name =       "iop-mpu",
 };
 
 static int wait_mpu_idle(void)

From 3ada8b7e980dac7cc42937d42d90ee51b19204fe Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:43 -0800
Subject: [PATCH 52/60] block: struct device - replace bus_id with dev_name(),
 dev_set_name()

Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 block/bsg.c           |  6 +++---
 block/genhd.c         |  2 +-
 fs/partitions/check.c | 11 +++--------
 3 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/block/bsg.c b/block/bsg.c
index e73e50daf3d..d414bb5607e 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -42,7 +42,7 @@ struct bsg_device {
 	int done_cmds;
 	wait_queue_head_t wq_done;
 	wait_queue_head_t wq_free;
-	char name[BUS_ID_SIZE];
+	char name[20];
 	int max_queue;
 	unsigned long flags;
 };
@@ -781,7 +781,7 @@ static struct bsg_device *bsg_add_device(struct inode *inode,
 	mutex_lock(&bsg_mutex);
 	hlist_add_head(&bd->dev_list, bsg_dev_idx_hash(iminor(inode)));
 
-	strncpy(bd->name, rq->bsg_dev.class_dev->bus_id, sizeof(bd->name) - 1);
+	strncpy(bd->name, dev_name(rq->bsg_dev.class_dev), sizeof(bd->name) - 1);
 	dprintk("bound to <%s>, max queue %d\n",
 		format_dev_t(buf, inode->i_rdev), bd->max_queue);
 
@@ -992,7 +992,7 @@ int bsg_register_queue(struct request_queue *q, struct device *parent,
 	if (name)
 		devname = name;
 	else
-		devname = parent->bus_id;
+		devname = dev_name(parent);
 
 	/*
 	 * we need a proper transport to send commands, not a stacked device
diff --git a/block/genhd.c b/block/genhd.c
index d84a7df1e2a..397960cf26a 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1084,7 +1084,7 @@ dev_t blk_lookup_devt(const char *name, int partno)
 		struct gendisk *disk = dev_to_disk(dev);
 		struct hd_struct *part;
 
-		if (strcmp(dev->bus_id, name))
+		if (strcmp(dev_name(dev), name))
 			continue;
 
 		part = disk_get_part(disk, partno);
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 6d5b213b8a9..5198ada6739 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -384,9 +384,9 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno,
 
 	dname = dev_name(ddev);
 	if (isdigit(dname[strlen(dname) - 1]))
-		snprintf(pdev->bus_id, BUS_ID_SIZE, "%sp%d", dname, partno);
+		dev_set_name(pdev, "%sp%d", dname, partno);
 	else
-		snprintf(pdev->bus_id, BUS_ID_SIZE, "%s%d", dname, partno);
+		dev_set_name(pdev, "%s%d", dname, partno);
 
 	device_initialize(pdev);
 	pdev->class = &block_class;
@@ -447,16 +447,11 @@ void register_disk(struct gendisk *disk)
 	struct block_device *bdev;
 	struct disk_part_iter piter;
 	struct hd_struct *part;
-	char *s;
 	int err;
 
 	ddev->parent = disk->driverfs_dev;
 
-	strlcpy(ddev->bus_id, disk->disk_name, BUS_ID_SIZE);
-	/* ewww... some of these buggers have / in the name... */
-	s = strchr(ddev->bus_id, '/');
-	if (s)
-		*s = '!';
+	dev_set_name(ddev, disk->disk_name);
 
 	/* delay uevents, until we scanned partition table */
 	ddev->uevent_suppress = 1;

From 169539c8720883202e67a3042eaa7facd6188dcf Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:43 -0800
Subject: [PATCH 53/60] avr: struct device - replace bus_id with dev_name(),
 dev_set_name()

Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/avr32/mach-at32ap/clock.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/avr32/mach-at32ap/clock.c b/arch/avr32/mach-at32ap/clock.c
index 138a00a2a2d..442f08c5e64 100644
--- a/arch/avr32/mach-at32ap/clock.c
+++ b/arch/avr32/mach-at32ap/clock.c
@@ -198,7 +198,7 @@ dump_clock(struct clk *parent, struct clkinf *r)
 	unsigned	i;
 
 	/* skip clocks coupled to devices that aren't registered */
-	if (parent->dev && !parent->dev->bus_id[0] && !parent->users)
+	if (parent->dev && !dev_name(parent->dev) && !parent->users)
 		return;
 
 	/* <nest spaces> name <pad to end> */
@@ -214,7 +214,7 @@ dump_clock(struct clk *parent, struct clkinf *r)
 		parent->users ? "on" : "off",	/* NOTE: not-paranoid!! */
 		clk_get_rate(parent));
 	if (parent->dev)
-		seq_printf(r->s, ", for %s", parent->dev->bus_id);
+		seq_printf(r->s, ", for %s", dev_name(parent->dev));
 	seq_printf(r->s, "\n");
 
 	/* cost of this scan is small, but not linear... */

From b9d5fc41dc2e93867a92a030d3beb0bdab7fde37 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:43 -0800
Subject: [PATCH 54/60] libata: struct device - replace bus_id with dev_name(),
 dev_set_name()

Cc: Jeff Garzik <jgarzik@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/ata/libata-scsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 4040d8b5321..9e92107691f 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3369,7 +3369,7 @@ static void ata_scsi_remove_dev(struct ata_device *dev)
 
 	if (sdev) {
 		ata_dev_printk(dev, KERN_INFO, "detaching (SCSI %s)\n",
-			       sdev->sdev_gendev.bus_id);
+			       dev_name(&sdev->sdev_gendev));
 
 		scsi_remove_device(sdev);
 		scsi_device_put(sdev);

From 1d559e29138834bbcdf34ac072232bf543bfc4e0 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Tue, 6 Jan 2009 10:44:43 -0800
Subject: [PATCH 55/60] arm: struct device - replace bus_id with dev_name(),
 dev_set_name()

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/arm/kernel/ecard.c                  |  2 +-
 arch/arm/mach-aaec2000/core.c            |  2 +-
 arch/arm/mach-ep93xx/core.c              |  6 +++---
 arch/arm/mach-integrator/core.c          | 10 +++++-----
 arch/arm/mach-integrator/integrator_cp.c |  6 +++---
 arch/arm/mach-lh7a40x/clcd.c             |  2 +-
 arch/arm/mach-netx/fb.c                  |  2 +-
 arch/arm/mach-realview/core.h            |  2 +-
 arch/arm/mach-versatile/core.h           |  2 +-
 arch/arm/plat-omap/include/mach/memory.h |  2 +-
 10 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index 60c079d8535..eed2f795e1b 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -817,7 +817,7 @@ static struct expansion_card *__init ecard_alloc_card(int type, int slot)
 	ec->dma = NO_DMA;
 	ec->ops = &ecard_default_ops;
 
-	snprintf(ec->dev.bus_id, sizeof(ec->dev.bus_id), "ecard%d", slot);
+	dev_set_name(&ec->dev, "ecard%d", slot);
 	ec->dev.parent = NULL;
 	ec->dev.bus = &ecard_bus_type;
 	ec->dev.dma_mask = &ec->dma_mask;
diff --git a/arch/arm/mach-aaec2000/core.c b/arch/arm/mach-aaec2000/core.c
index 50e13965dfe..b5c5fc6ba3a 100644
--- a/arch/arm/mach-aaec2000/core.c
+++ b/arch/arm/mach-aaec2000/core.c
@@ -212,7 +212,7 @@ static struct clcd_board clcd_plat_data = {
 
 static struct amba_device clcd_device = {
 	.dev		= {
-		.bus_id			= "mb:16",
+		.init_name		= "mb:16",
 		.coherent_dma_mask	= ~0,
 		.platform_data		= &clcd_plat_data,
 	},
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 4781f323703..6d9152de607 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -409,7 +409,7 @@ static struct amba_pl010_data ep93xx_uart_data = {
 
 static struct amba_device uart1_device = {
 	.dev		= {
-		.bus_id		= "apb:uart1",
+		.init_name	= "apb:uart1",
 		.platform_data	= &ep93xx_uart_data,
 	},
 	.res		= {
@@ -423,7 +423,7 @@ static struct amba_device uart1_device = {
 
 static struct amba_device uart2_device = {
 	.dev		= {
-		.bus_id		= "apb:uart2",
+		.init_name	= "apb:uart2",
 		.platform_data	= &ep93xx_uart_data,
 	},
 	.res		= {
@@ -437,7 +437,7 @@ static struct amba_device uart2_device = {
 
 static struct amba_device uart3_device = {
 	.dev		= {
-		.bus_id		= "apb:uart3",
+		.init_name	= "apb:uart3",
 		.platform_data	= &ep93xx_uart_data,
 	},
 	.res		= {
diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
index c89c949b4d4..6f887291307 100644
--- a/arch/arm/mach-integrator/core.c
+++ b/arch/arm/mach-integrator/core.c
@@ -37,7 +37,7 @@ static struct amba_pl010_data integrator_uart_data;
 
 static struct amba_device rtc_device = {
 	.dev		= {
-		.bus_id	= "mb:15",
+		.init_name = "mb:15",
 	},
 	.res		= {
 		.start	= INTEGRATOR_RTC_BASE,
@@ -50,7 +50,7 @@ static struct amba_device rtc_device = {
 
 static struct amba_device uart0_device = {
 	.dev		= {
-		.bus_id	= "mb:16",
+		.init_name = "mb:16",
 		.platform_data = &integrator_uart_data,
 	},
 	.res		= {
@@ -64,7 +64,7 @@ static struct amba_device uart0_device = {
 
 static struct amba_device uart1_device = {
 	.dev		= {
-		.bus_id	= "mb:17",
+		.init_name = "mb:17",
 		.platform_data = &integrator_uart_data,
 	},
 	.res		= {
@@ -78,7 +78,7 @@ static struct amba_device uart1_device = {
 
 static struct amba_device kmi0_device = {
 	.dev		= {
-		.bus_id	= "mb:18",
+		.init_name = "mb:18",
 	},
 	.res		= {
 		.start	= KMI0_BASE,
@@ -91,7 +91,7 @@ static struct amba_device kmi0_device = {
 
 static struct amba_device kmi1_device = {
 	.dev		= {
-		.bus_id	= "mb:19",
+		.init_name = "mb:19",
 	},
 	.res		= {
 		.start	= KMI1_BASE,
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index 427c2d8dc12..4ac04055c2e 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -407,7 +407,7 @@ static struct mmc_platform_data mmc_data = {
 
 static struct amba_device mmc_device = {
 	.dev		= {
-		.bus_id	= "mb:1c",
+		.init_name = "mb:1c",
 		.platform_data = &mmc_data,
 	},
 	.res		= {
@@ -421,7 +421,7 @@ static struct amba_device mmc_device = {
 
 static struct amba_device aaci_device = {
 	.dev		= {
-		.bus_id	= "mb:1d",
+		.init_name = "mb:1d",
 	},
 	.res		= {
 		.start	= INTCP_PA_AACI_BASE,
@@ -532,7 +532,7 @@ static struct clcd_board clcd_data = {
 
 static struct amba_device clcd_device = {
 	.dev		= {
-		.bus_id	= "mb:c0",
+		.init_name = "mb:c0",
 		.coherent_dma_mask = ~0,
 		.platform_data = &clcd_data,
 	},
diff --git a/arch/arm/mach-lh7a40x/clcd.c b/arch/arm/mach-lh7a40x/clcd.c
index a2a543258fc..c472b9e8b37 100644
--- a/arch/arm/mach-lh7a40x/clcd.c
+++ b/arch/arm/mach-lh7a40x/clcd.c
@@ -207,7 +207,7 @@ static struct clcd_board clcd_platform_data = {
 static struct amba_device name##_device = {			\
 	.dev = {						\
 		.coherent_dma_mask = ~0,			\
-		.bus_id	= busid,				\
+		.init_name = busid,				\
 		.platform_data = plat,				\
 		},						\
 	.res = {						\
diff --git a/arch/arm/mach-netx/fb.c b/arch/arm/mach-netx/fb.c
index 8f1f992f002..ea8fa8898fe 100644
--- a/arch/arm/mach-netx/fb.c
+++ b/arch/arm/mach-netx/fb.c
@@ -91,7 +91,7 @@ void clk_put(struct clk *clk)
 
 static struct amba_device fb_device = {
 	.dev		= {
-		.bus_id	= "fb",
+		.init_name = "fb",
 		.coherent_dma_mask = ~0,
 	},
 	.res		= {
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 63be2abdc19..44269b162d4 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -31,7 +31,7 @@
 static struct amba_device name##_device = {			\
 	.dev		= {					\
 		.coherent_dma_mask = ~0,			\
-		.bus_id	= busid,				\
+		.init_name = busid,				\
 		.platform_data = plat,				\
 	},							\
 	.res		= {					\
diff --git a/arch/arm/mach-versatile/core.h b/arch/arm/mach-versatile/core.h
index afcaa858eb1..9d39886a835 100644
--- a/arch/arm/mach-versatile/core.h
+++ b/arch/arm/mach-versatile/core.h
@@ -34,7 +34,7 @@ extern unsigned int mmc_status(struct device *dev);
 static struct amba_device name##_device = {			\
 	.dev		= {					\
 		.coherent_dma_mask = ~0,			\
-		.bus_id	= busid,				\
+		.init_name = busid,				\
 		.platform_data = plat,				\
 	},							\
 	.res		= {					\
diff --git a/arch/arm/plat-omap/include/mach/memory.h b/arch/arm/plat-omap/include/mach/memory.h
index 211c9f6619e..d6b5ca6c7da 100644
--- a/arch/arm/plat-omap/include/mach/memory.h
+++ b/arch/arm/plat-omap/include/mach/memory.h
@@ -59,7 +59,7 @@
 
 #define virt_to_lbus(x)		((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET)
 #define lbus_to_virt(x)		((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET)
-#define is_lbus_device(dev)	(cpu_is_omap15xx() && dev && (strncmp(dev->bus_id, "ohci", 4) == 0))
+#define is_lbus_device(dev)	(cpu_is_omap15xx() && dev && (strncmp(dev_name(dev), "ohci", 4) == 0))
 
 #define __arch_page_to_dma(dev, page)	({is_lbus_device(dev) ? \
 					(dma_addr_t)virt_to_lbus(page_address(page)) : \

From 7898aa5c39d159684dad15bab1150b8e77c7aed6 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Tue, 21 Oct 2008 11:17:51 +0200
Subject: [PATCH 56/60] UIO: use pci_ioremap_bar() in drivers/uio

Use the newly introduced pci_ioremap_bar() function in drivers/uio.
pci_ioremap_bar() just takes a pci device and a bar number, with the goal
of making it really hard to get wrong, while also having a central place
to stick sanity checks.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/uio/uio_cif.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/uio/uio_cif.c b/drivers/uio/uio_cif.c
index 57376060b97..c60b8fcf0e3 100644
--- a/drivers/uio/uio_cif.c
+++ b/drivers/uio/uio_cif.c
@@ -57,8 +57,7 @@ static int __devinit hilscher_pci_probe(struct pci_dev *dev,
 	info->mem[0].addr = pci_resource_start(dev, 0);
 	if (!info->mem[0].addr)
 		goto out_release;
-	info->mem[0].internal_addr = ioremap(pci_resource_start(dev, 0),
-					     pci_resource_len(dev, 0));
+	info->mem[0].internal_addr = pci_ioremap_bar(dev, 0);
 	if (!info->mem[0].internal_addr)
 		goto out_release;
 

From e543ae896626a54c0c05e3c434312d6d033d450c Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Wed, 29 Oct 2008 18:35:52 -0400
Subject: [PATCH 57/60] UIO: uio_pdrv_genirq: allow custom irq_flags

I can't think of a reason why the driver prevents people from setting any
custom bits in their platform device, but I can think of some reasons for
allowing custom flags.  Like setting the IRQF_TRIGGER_... bits.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/uio/uio_pdrv_genirq.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c
index 1f82c83a92a..3f06818cf9f 100644
--- a/drivers/uio/uio_pdrv_genirq.c
+++ b/drivers/uio/uio_pdrv_genirq.c
@@ -81,7 +81,8 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev)
 		goto bad0;
 	}
 
-	if (uioinfo->handler || uioinfo->irqcontrol || uioinfo->irq_flags) {
+	if (uioinfo->handler || uioinfo->irqcontrol ||
+	    uioinfo->irq_flags & IRQF_SHARED) {
 		dev_err(&pdev->dev, "interrupt configuration error\n");
 		goto bad0;
 	}
@@ -132,7 +133,7 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev)
 	 * Interrupt sharing is not supported.
 	 */
 
-	uioinfo->irq_flags = IRQF_DISABLED;
+	uioinfo->irq_flags |= IRQF_DISABLED;
 	uioinfo->handler = uio_pdrv_genirq_handler;
 	uioinfo->irqcontrol = uio_pdrv_genirq_irqcontrol;
 	uioinfo->priv = priv;

From e70c412ee45332db2636a8f5a35a0685efb0e4aa Mon Sep 17 00:00:00 2001
From: "Hans J. Koch" <hjk@linutronix.de>
Date: Sat, 6 Dec 2008 02:23:13 +0100
Subject: [PATCH 58/60] UIO: Pass information about ioports to userspace (V2)

Devices sometimes have memory where all or parts of it can not be mapped to
userspace. But it might still be possible to access this memory from
userspace by other means. An example are PCI cards that advertise not only
mappable memory but also ioport ranges. On x86 architectures, these can be
accessed with ioperm, iopl, inb, outb, and friends. Mike Frysinger (CCed)
reported a similar problem on Blackfin arch where it doesn't seem to be easy
to mmap non-cached memory but it can still be accessed from userspace.

This patch allows kernel drivers to pass information about such ports to
userspace. Similar to the existing mem[] array, it adds a port[] array to
struct uio_info. Each port range is described by start, size, and porttype.

If a driver fills in at least one such port range, the UIO core will simply
pass this information to userspace by creating a new directory "portio"
underneath /sys/class/uio/uioN/. Similar to the "mem" directory, it will
contain a subdirectory (portX) for each port range given.

Note that UIO simply passes this information to userspace, it performs no
action whatsoever with this data. It's userspace's responsibility to obtain
access to these ports and to solve arch dependent issues. The "porttype"
attribute tells userspace what kind of port it is dealing with.

This mechanism could also be used to give userspace information about GPIOs
related to a device. You frequently find such hardware in embedded devices,
so I added a UIO_PORT_GPIO definition. I'm not really sure if this is a good
idea since there are other solutions to this problem, but it won't hurt much
anyway.

Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/uio/uio.c          | 159 +++++++++++++++++++++++++++++++++----
 include/linux/uio_driver.h |  26 ++++++
 2 files changed, 168 insertions(+), 17 deletions(-)

diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 2d2440cd57a..4ca85a113aa 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -35,6 +35,7 @@ struct uio_device {
 	int			vma_count;
 	struct uio_info		*info;
 	struct kobject		*map_dir;
+	struct kobject		*portio_dir;
 };
 
 static int uio_major;
@@ -75,17 +76,17 @@ static ssize_t map_offset_show(struct uio_mem *mem, char *buf)
 	return sprintf(buf, "0x%lx\n", mem->addr & ~PAGE_MASK);
 }
 
-struct uio_sysfs_entry {
+struct map_sysfs_entry {
 	struct attribute attr;
 	ssize_t (*show)(struct uio_mem *, char *);
 	ssize_t (*store)(struct uio_mem *, const char *, size_t);
 };
 
-static struct uio_sysfs_entry addr_attribute =
+static struct map_sysfs_entry addr_attribute =
 	__ATTR(addr, S_IRUGO, map_addr_show, NULL);
-static struct uio_sysfs_entry size_attribute =
+static struct map_sysfs_entry size_attribute =
 	__ATTR(size, S_IRUGO, map_size_show, NULL);
-static struct uio_sysfs_entry offset_attribute =
+static struct map_sysfs_entry offset_attribute =
 	__ATTR(offset, S_IRUGO, map_offset_show, NULL);
 
 static struct attribute *attrs[] = {
@@ -106,9 +107,9 @@ static ssize_t map_type_show(struct kobject *kobj, struct attribute *attr,
 {
 	struct uio_map *map = to_map(kobj);
 	struct uio_mem *mem = map->mem;
-	struct uio_sysfs_entry *entry;
+	struct map_sysfs_entry *entry;
 
-	entry = container_of(attr, struct uio_sysfs_entry, attr);
+	entry = container_of(attr, struct map_sysfs_entry, attr);
 
 	if (!entry->show)
 		return -EIO;
@@ -116,16 +117,93 @@ static ssize_t map_type_show(struct kobject *kobj, struct attribute *attr,
 	return entry->show(mem, buf);
 }
 
-static struct sysfs_ops uio_sysfs_ops = {
+static struct sysfs_ops map_sysfs_ops = {
 	.show = map_type_show,
 };
 
 static struct kobj_type map_attr_type = {
 	.release	= map_release,
-	.sysfs_ops	= &uio_sysfs_ops,
+	.sysfs_ops	= &map_sysfs_ops,
 	.default_attrs	= attrs,
 };
 
+struct uio_portio {
+	struct kobject kobj;
+	struct uio_port *port;
+};
+#define to_portio(portio) container_of(portio, struct uio_portio, kobj)
+
+static ssize_t portio_start_show(struct uio_port *port, char *buf)
+{
+	return sprintf(buf, "0x%lx\n", port->start);
+}
+
+static ssize_t portio_size_show(struct uio_port *port, char *buf)
+{
+	return sprintf(buf, "0x%lx\n", port->size);
+}
+
+static ssize_t portio_porttype_show(struct uio_port *port, char *buf)
+{
+	const char *porttypes[] = {"none", "x86", "gpio", "other"};
+
+	if ((port->porttype < 0) || (port->porttype > UIO_PORT_OTHER))
+		return -EINVAL;
+
+	return sprintf(buf, "port_%s\n", porttypes[port->porttype]);
+}
+
+struct portio_sysfs_entry {
+	struct attribute attr;
+	ssize_t (*show)(struct uio_port *, char *);
+	ssize_t (*store)(struct uio_port *, const char *, size_t);
+};
+
+static struct portio_sysfs_entry portio_start_attribute =
+	__ATTR(start, S_IRUGO, portio_start_show, NULL);
+static struct portio_sysfs_entry portio_size_attribute =
+	__ATTR(size, S_IRUGO, portio_size_show, NULL);
+static struct portio_sysfs_entry portio_porttype_attribute =
+	__ATTR(porttype, S_IRUGO, portio_porttype_show, NULL);
+
+static struct attribute *portio_attrs[] = {
+	&portio_start_attribute.attr,
+	&portio_size_attribute.attr,
+	&portio_porttype_attribute.attr,
+	NULL,
+};
+
+static void portio_release(struct kobject *kobj)
+{
+	struct uio_portio *portio = to_portio(kobj);
+	kfree(portio);
+}
+
+static ssize_t portio_type_show(struct kobject *kobj, struct attribute *attr,
+			     char *buf)
+{
+	struct uio_portio *portio = to_portio(kobj);
+	struct uio_port *port = portio->port;
+	struct portio_sysfs_entry *entry;
+
+	entry = container_of(attr, struct portio_sysfs_entry, attr);
+
+	if (!entry->show)
+		return -EIO;
+
+	return entry->show(port, buf);
+}
+
+static struct sysfs_ops portio_sysfs_ops = {
+	.show = portio_type_show,
+};
+
+static struct kobj_type portio_attr_type = {
+	.release	= portio_release,
+	.sysfs_ops	= &portio_sysfs_ops,
+	.default_attrs	= portio_attrs,
+};
+
 static ssize_t show_name(struct device *dev,
 			 struct device_attribute *attr, char *buf)
 {
@@ -177,10 +255,13 @@ static struct attribute_group uio_attr_grp = {
 static int uio_dev_add_attributes(struct uio_device *idev)
 {
 	int ret;
-	int mi;
+	int mi, pi;
 	int map_found = 0;
+	int portio_found = 0;
 	struct uio_mem *mem;
 	struct uio_map *map;
+	struct uio_port *port;
+	struct uio_portio *portio;
 
 	ret = sysfs_create_group(&idev->dev->kobj, &uio_attr_grp);
 	if (ret)
@@ -195,25 +276,58 @@ static int uio_dev_add_attributes(struct uio_device *idev)
 			idev->map_dir = kobject_create_and_add("maps",
 							&idev->dev->kobj);
 			if (!idev->map_dir)
-				goto err;
+				goto err_map;
 		}
 		map = kzalloc(sizeof(*map), GFP_KERNEL);
 		if (!map)
-			goto err;
+			goto err_map;
 		kobject_init(&map->kobj, &map_attr_type);
 		map->mem = mem;
 		mem->map = map;
 		ret = kobject_add(&map->kobj, idev->map_dir, "map%d", mi);
 		if (ret)
-			goto err;
+			goto err_map;
 		ret = kobject_uevent(&map->kobj, KOBJ_ADD);
 		if (ret)
-			goto err;
+			goto err_map;
+	}
+
+	for (pi = 0; pi < MAX_UIO_PORT_REGIONS; pi++) {
+		port = &idev->info->port[pi];
+		if (port->size == 0)
+			break;
+		if (!portio_found) {
+			portio_found = 1;
+			idev->portio_dir = kobject_create_and_add("portio",
+							&idev->dev->kobj);
+			if (!idev->portio_dir)
+				goto err_portio;
+		}
+		portio = kzalloc(sizeof(*portio), GFP_KERNEL);
+		if (!portio)
+			goto err_portio;
+		kobject_init(&portio->kobj, &portio_attr_type);
+		portio->port = port;
+		port->portio = portio;
+		ret = kobject_add(&portio->kobj, idev->portio_dir,
+							"port%d", pi);
+		if (ret)
+			goto err_portio;
+		ret = kobject_uevent(&portio->kobj, KOBJ_ADD);
+		if (ret)
+			goto err_portio;
 	}
 
 	return 0;
 
-err:
+err_portio:
+	for (pi--; pi >= 0; pi--) {
+		port = &idev->info->port[pi];
+		portio = port->portio;
+		kobject_put(&portio->kobj);
+	}
+	kobject_put(idev->portio_dir);
+err_map:
 	for (mi--; mi>=0; mi--) {
 		mem = &idev->info->mem[mi];
 		map = mem->map;
@@ -228,15 +342,26 @@ err_group:
 
 static void uio_dev_del_attributes(struct uio_device *idev)
 {
-	int mi;
+	int i;
 	struct uio_mem *mem;
-	for (mi = 0; mi < MAX_UIO_MAPS; mi++) {
-		mem = &idev->info->mem[mi];
+	struct uio_port *port;
+
+	for (i = 0; i < MAX_UIO_MAPS; i++) {
+		mem = &idev->info->mem[i];
 		if (mem->size == 0)
 			break;
 		kobject_put(&mem->map->kobj);
 	}
 	kobject_put(idev->map_dir);
+
+	for (i = 0; i < MAX_UIO_PORT_REGIONS; i++) {
+		port = &idev->info->port[i];
+		if (port->size == 0)
+			break;
+		kobject_put(&port->portio->kobj);
+	}
+	kobject_put(idev->portio_dir);
+
 	sysfs_remove_group(&idev->dev->kobj, &uio_attr_grp);
 }
 
diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h
index cdf338d94b7..20be327bfbb 100644
--- a/include/linux/uio_driver.h
+++ b/include/linux/uio_driver.h
@@ -38,6 +38,24 @@ struct uio_mem {
 
 #define MAX_UIO_MAPS	5
 
+struct uio_portio;
+
+/**
+ * struct uio_port - description of a UIO port region
+ * @start:		start of port region
+ * @size:		size of port region
+ * @porttype:		type of port (see UIO_PORT_* below)
+ * @portio:		for use by the UIO core only.
+ */
+struct uio_port {
+	unsigned long		start;
+	unsigned long		size;
+	int			porttype;
+	struct uio_portio	*portio;
+};
+
+#define MAX_UIO_PORT_REGIONS	5
+
 struct uio_device;
 
 /**
@@ -46,6 +64,7 @@ struct uio_device;
  * @name:		device name
  * @version:		device driver version
  * @mem:		list of mappable memory regions, size==0 for end of list
+ * @port:		list of port regions, size==0 for end of list
  * @irq:		interrupt number or UIO_IRQ_CUSTOM
  * @irq_flags:		flags for request_irq()
  * @priv:		optional private data
@@ -60,6 +79,7 @@ struct uio_info {
 	char			*name;
 	char			*version;
 	struct uio_mem		mem[MAX_UIO_MAPS];
+	struct uio_port		port[MAX_UIO_PORT_REGIONS];
 	long			irq;
 	unsigned long		irq_flags;
 	void			*priv;
@@ -92,4 +112,10 @@ extern void uio_event_notify(struct uio_info *info);
 #define UIO_MEM_LOGICAL	2
 #define UIO_MEM_VIRTUAL 3
 
+/* defines for uio_port->porttype */
+#define UIO_PORT_NONE	0
+#define UIO_PORT_X86	1
+#define UIO_PORT_GPIO	2
+#define UIO_PORT_OTHER	3
+
 #endif /* _LINUX_UIO_DRIVER_H_ */

From a2ab3d30005cdce45c2c7e31ad6743ad7975609a Mon Sep 17 00:00:00 2001
From: "Hans J. Koch" <hjk@linutronix.de>
Date: Sat, 6 Dec 2008 02:25:13 +0100
Subject: [PATCH 59/60] UIO: Documentation for UIO ioport info handling

This patch updates UIO documentation with the changes introduced by
previous UIO patch.

Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 Documentation/DocBook/uio-howto.tmpl | 97 ++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)

diff --git a/Documentation/DocBook/uio-howto.tmpl b/Documentation/DocBook/uio-howto.tmpl
index df87d1b9360..6116b93608d 100644
--- a/Documentation/DocBook/uio-howto.tmpl
+++ b/Documentation/DocBook/uio-howto.tmpl
@@ -41,6 +41,12 @@ GPL version 2.
 </abstract>
 
 <revhistory>
+	<revision>
+	<revnumber>0.6</revnumber>
+	<date>2008-12-05</date>
+	<authorinitials>hjk</authorinitials>
+	<revremark>Added description of portio sysfs attributes.</revremark>
+	</revision>
 	<revision>
 	<revnumber>0.5</revnumber>
 	<date>2008-05-22</date>
@@ -318,6 +324,54 @@ interested in translating it, please email me
 offset = N * getpagesize();
 </programlisting>
 
+<para>
+	Sometimes there is hardware with memory-like regions that can not be
+	mapped with the technique described here, but there are still ways to
+	access them from userspace. The most common example are x86 ioports.
+	On x86 systems, userspace can access these ioports using
+	<function>ioperm()</function>, <function>iopl()</function>,
+	<function>inb()</function>, <function>outb()</function>, and similar
+	functions.
+</para>
+<para>
+	Since these ioport regions can not be mapped, they will not appear under
+	<filename>/sys/class/uio/uioX/maps/</filename> like the normal memory
+	described above. Without information about the port regions a hardware
+	has to offer, it becomes difficult for the userspace part of the
+	driver to find out which ports belong to which UIO device.
+</para>
+<para>
+	To address this situation, the new directory
+	<filename>/sys/class/uio/uioX/portio/</filename> was added. It only
+	exists if the driver wants to pass information about one or more port
+	regions to userspace. If that is the case, subdirectories named
+	<filename>port0</filename>, <filename>port1</filename>, and so on,
+	will appear underneath
+	<filename>/sys/class/uio/uioX/portio/</filename>.
+</para>
+<para>
+	Each <filename>portX/</filename> directory contains three read-only
+	files that show start, size, and type of the port region:
+</para>
+<itemizedlist>
+<listitem>
+	<para>
+	<filename>start</filename>: The first port of this region.
+	</para>
+</listitem>
+<listitem>
+	<para>
+	<filename>size</filename>: The number of ports in this region.
+	</para>
+</listitem>
+<listitem>
+	<para>
+	<filename>porttype</filename>: A string describing the type of port.
+	</para>
+</listitem>
+</itemizedlist>
+
+
 </sect1>
 </chapter>
 
@@ -355,6 +409,13 @@ mapping you need to fill one of the <varname>uio_mem</varname> structures.
 See the description below for details.
 </para></listitem>
 
+<listitem><para>
+<varname>struct uio_port port[ MAX_UIO_PORTS_REGIONS ]</varname>: Required
+if you want to pass information about ioports to userspace. For each port
+region you need to fill one of the <varname>uio_port</varname> structures.
+See the description below for details.
+</para></listitem>
+
 <listitem><para>
 <varname>long irq</varname>: Required. If your hardware generates an
 interrupt, it's your modules task to determine the irq number during
@@ -448,6 +509,42 @@ Please do not touch the <varname>kobj</varname> element of
 <varname>struct uio_mem</varname>! It is used by the UIO framework
 to set up sysfs files for this mapping. Simply leave it alone.
 </para>
+
+<para>
+Sometimes, your device can have one or more port regions which can not be
+mapped to userspace. But if there are other possibilities for userspace to
+access these ports, it makes sense to make information about the ports
+available in sysfs. For each region, you have to set up a
+<varname>struct uio_port</varname> in the <varname>port[]</varname> array.
+Here's a description of the fields of <varname>struct uio_port</varname>:
+</para>
+
+<itemizedlist>
+<listitem><para>
+<varname>char *porttype</varname>: Required. Set this to one of the predefined
+constants. Use <varname>UIO_PORT_X86</varname> for the ioports found in x86
+architectures.
+</para></listitem>
+
+<listitem><para>
+<varname>unsigned long start</varname>: Required if the port region is used.
+Fill in the number of the first port of this region.
+</para></listitem>
+
+<listitem><para>
+<varname>unsigned long size</varname>: Fill in the number of ports in this
+region. If <varname>size</varname> is zero, the region is considered unused.
+Note that you <emphasis>must</emphasis> initialize <varname>size</varname>
+with zero for all unused regions.
+</para></listitem>
+</itemizedlist>
+
+<para>
+Please do not touch the <varname>portio</varname> element of
+<varname>struct uio_port</varname>! It is used internally by the UIO
+framework to set up sysfs files for this region. Simply leave it alone.
+</para>
+
 </sect1>
 
 <sect1 id="adding_irq_handler">

From b8ac9fc0e8cda9f9776019c5b0464b0c6d2d4c90 Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Fri, 12 Dec 2008 11:44:21 +0100
Subject: [PATCH 60/60] uio: make uio_info's name and version const

These are only ever assigned constant strings and never modified.

This was noticed because Wolfram Sang needed to cast the result of
of_get_property() in order to assign it to the name field of a struct
uio_info.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 Documentation/DocBook/uio-howto.tmpl | 4 ++--
 include/linux/uio_driver.h           | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/Documentation/DocBook/uio-howto.tmpl b/Documentation/DocBook/uio-howto.tmpl
index 6116b93608d..b787e4721c9 100644
--- a/Documentation/DocBook/uio-howto.tmpl
+++ b/Documentation/DocBook/uio-howto.tmpl
@@ -393,12 +393,12 @@ offset = N * getpagesize();
 
 <itemizedlist>
 <listitem><para>
-<varname>char *name</varname>: Required. The name of your driver as
+<varname>const char *name</varname>: Required. The name of your driver as
 it will appear in sysfs. I recommend using the name of your module for this.
 </para></listitem>
 
 <listitem><para>
-<varname>char *version</varname>: Required. This string appears in
+<varname>const char *version</varname>: Required. This string appears in
 <filename>/sys/class/uio/uioX/version</filename>.
 </para></listitem>
 
diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h
index 20be327bfbb..a0bb6bd2e5c 100644
--- a/include/linux/uio_driver.h
+++ b/include/linux/uio_driver.h
@@ -76,8 +76,8 @@ struct uio_device;
  */
 struct uio_info {
 	struct uio_device	*uio_dev;
-	char			*name;
-	char			*version;
+	const char		*name;
+	const char		*version;
 	struct uio_mem		mem[MAX_UIO_MAPS];
 	struct uio_port		port[MAX_UIO_PORT_REGIONS];
 	long			irq;