After 02f0777a0d "vc_origin" is no
longer reset to the screen buffer before calling the con_init() hook
of the new console driver.
If the old driver wasn't using a fixed scanout buffer (e.g. the case
of vgacon) "vc_origin" may be a pointer to a VRAM location, and its
contents aren't guaranteed to be preserved after calling con_deinit()
on the old driver and con_init() on the new driver, i.e. the
subsequent console resize may fill the framebuffer with garbage.
It can be reproduced in the transition from vgacon to the nouveau
framebuffer driver: in that case the legacy VGA aperture "vc_origin"
points to becomes unreadable after fbcon_init().
This patch reverts the mentioned commit. To avoid the problem it
intended to fix, stop using "vc_scr_end" in vc_do_resize() to
calculate how many rows we have to copy (actually the code looks
simpler this way without the help of "vc_scr_end").
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Cc: qiaochong <qiaochong@loongson.cn>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: ohci: work around VIA and NEC PHY packet reception bug
firewire: core: do not use del_timer_sync() in interrupt context
firewire: net: fix unicast reception RCODE in failure paths
firewire: sbp2: fix stall with "Unsolicited response"
firewire: sbp2: fix memory leak in sbp2_cancel_orbs or at send error
ieee1394: Adjust confusing if indentation
VIA VT6306, VIA VT6308, and NEC OrangeLink controllers do not write
packet event codes for received PHY packets (or perhaps write
evt_no_status, hard to tell). Work around it by overwriting the
packet's ACK by ack_complete, so that upper layers that listen to PHY
packet reception get to see these packets.
(Also tested: TI TSB82AA2, TI TSB43AB22/A, TI XIO2213A, Agere FW643,
JMicron JMB381 --- these do not exhibit this bug.)
Clemens proposed a quirks flag for that, IOW whitelist known misbehaving
controllers for this workaround. Though to me it seems harmless enough
to enable for all controllers.
The log_ar_at_event() debug log will continue to show the original
status from the DMA unit.
Reported-by: Clemens Ladisch <clemens@ladisch.de> (VT6308)
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
net/ipv4: Eliminate kstrdup memory leak
net/caif/cfrfml.c: use asm/unaligned.h
ax25: missplaced sock_put(sk)
qlge: reset the chip before freeing the buffers
l2tp: test for ethernet header in l2tp_eth_dev_recv()
tcp: select(writefds) don't hang up when a peer close connection
tcp: fix three tcp sysctls tuning
tcp: Combat per-cpu skew in orphan tests.
pxa168_eth: silence gcc warnings
pxa168_eth: update call to phy_mii_ioctl()
pxa168_eth: fix error handling in prope
pxa168_eth: remove unneeded null check
phylib: Fix race between returning phydev and calling adjust_link
caif-driver: add HAS_DMA dependency
3c59x: Fix deadlock between boomerang_interrupt and boomerang_start_tx
qlcnic: fix poll implementation
netxen: fix poll implementation
bridge: netfilter: fix a memory leak
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
vgaarb: Wrap vga_(get|put) in CONFIG_VGA_ARB
drm/radeon/kms: add missing scratch update in dp_detect
drm/modes: Fix CVT-R modeline generation
drm: fix regression in drm locking since BKL removal.
drm/radeon/kms: remove stray radeon_i2c_destroy
drm: mm: fix range restricted allocations
drm/nouveau: drop drm_global_mutex before sleeping in submission path
drm: export drm_global_mutex for drivers to use
drm/nv20: Don't use pushbuf calls on the original nv20.
drm/nouveau: Fix TMDS on some DCB1.5 boards.
drm/nouveau: Fix backlight control on PPC machines with an internal TMDS panel.
drm/nv30: Apply modesetting to the correct slave encoder
drm/nouveau: Use a helper function to match PCI device/subsystem IDs.
drm/nv50: add dcb type 14 to enum to prevent compiler complaint
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
amd64_edac: Do not report error overflow as a separate error
MCE, AMD: Limit MCE decoding to current families for now
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=16651
Signed-off-by: Adam Jackson <ajax@redhat.com>
Tested-by: Adam Serbinski <adam@serbinksi.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This locking path needs proper auditing but probably too late for changes at this point for 2.6.36, so lets go with the quick fix, which is to drop the lock around schedule.
Reported-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
I missed this one in the i2c unification patch. This
is handled in the core radeon i2c code now.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
With the code cleanup in
7a6b2896f2 is the first bad commit
commit 7a6b2896f2
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Fri Jul 2 15:02:15 2010 +0100
drm_mm: extract check_free_mm_node
I've botched up the range-restriction checks. The result is usually
an X server dying with SIGBUS in libpixman (software fallback rendering).
Change the code to adjust the start and end for range restricted
allocations. IMHO this even makes the code a bit clearer.
Fixes regression bug: https://bugs.freedesktop.org/show_bug.cgi?id=29738
Reported-by-Tested-by: Till MAtthiesen <entropy@everymail.net>
Acked-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
* 'nouveau/for-airlied' of /ssd/git/drm-nouveau-next:
drm/nouveau: drop drm_global_mutex before sleeping in submission path
drm: export drm_global_mutex for drivers to use
drm/nv20: Don't use pushbuf calls on the original nv20.
drm/nouveau: Fix TMDS on some DCB1.5 boards.
drm/nouveau: Fix backlight control on PPC machines with an internal TMDS panel.
drm/nv30: Apply modesetting to the correct slave encoder
drm/nouveau: Use a helper function to match PCI device/subsystem IDs.
drm/nv50: add dcb type 14 to enum to prevent compiler complaint
If we keep hold of the mutex here, the process which currently holds the
buffer object will never be able to release it, causing a deadlock.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Qlge is freeing the buffers before stopping the card DMA, and
this can cause some severe error, as a EEH event on PPC.
This patch just stop the card and then free the resources.
Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When the Overflow MCi_STATUS bit is set, EDAC reports the lost error
with a "no information available" message which often puzzles users
parsing the dmesg. This doesn't make much sense since this error has
been lost anyway so no need for reporting it separately. Thus, report
the overflow bit setting in the MCE dump instead. While at it, remove
reporting of MiscV and ErrorEnable (en) which are superfluous.
Now it looks like this:
[ 1501.650024] MC4_STATUS: Corrected error, other errors lost: yes, CPU context corrupt: no, CECC Error
[ 1501.666887] Northbridge Error, node 2
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
The "return" command is buggy on the original nv20, it jumps back to
the caller address as expected, but it doesn't clear the subroutine
active bit making the subsequent pushbuf calls fail with a "stack"
overflow.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
The TMDS output of an nv11 was being detected as LVDS, because it uses
DCB type 2 for TMDS instead of type 4.
Reported-by: Bertrand VIEILLE <Vieille.Bertrand@free.fr>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Remove harmful BUG_ON() from ata_bmdma_qc_issue(),
as it casts too wide of a net and breaks sata_mv.
It also crashes the kernel while doing the BUG_ON().
There's already a WARN_ON_ONCE() further down to catch
the case of POLLING for a BMDMA operation.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Cc: stable@kernel.org
Fix DSM/TRIM commands in sata_mv (v2).
These need to be issued using old-school "BM DMA",
rather than via the EDMA host queue.
Since the chips don't have proper BM DMA status,
we need to be more careful with setting the ATA_DMA_INTR bit,
since DSM/TRIM often has a long delay between "DMA complete"
and "command complete".
GEN_I chips don't have BM DMA, so no TRIM for them.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Cc: stable@kernel.org
ata_qc_issue() BUG_ON()s on data commands w/o data, which may be
submitted via SG_IO. Be less of a drama queen and just trigger
WARN_ON_ONCE() and fail the command with AC_ERR_SYSTEM.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Stefan Hübner <stefan.huebner@stud.tu-ilmenau.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
dma_dwc_xfer_setup() returns an int and "dma_chan" needs to be signed
for the error handling to work.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
88SE9128 can do FBS and sets it in HOST_CAP but forgets to set FBSCP
in PORT_CMD. Implement AHCI_HFLAG_YES_FBS and apply it to 88SE9128.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Winbond W83759A controller is fully supported by pata_legacy driver
so remove no longer needed pata_winbond driver.
Leave PATA_WINBOND_VLB config option for compatibility reasons
and teach pata_legacy to preserve the old behavior of pata_winbond
driver.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Commit d62f5576 (pata_cmd64x: fix handling of address setup timings)
incorrectly called ata_timing_compute() on UDMA mode on 0 @UT leading
to devide by zero fault. Revert it until better fix is available.
This is reported in bko#16607 by Milan Kocian who also root caused it.
https://bugzilla.kernel.org/show_bug.cgi?id=16607
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-and-root-caused-by: Milan Kocian <milan.kocian@wq.cz>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* 'upstream/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
xen: handle events as edge-triggered
xen: use percpu interrupts for IPIs and VIRQs
No need to call input_free_device() after input_unregister_device().
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Introduced by 987a6c0298 a swap in max/min
calculation gets fixed by this patch.
Reported-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Commit 8bf0223ed515be24de0c671eedaff49e78bebc9c (hwmon, k8temp: Fix
temperature reporting for ASB1 processor revisions) fixed temperature
reporting for ASB1 CPUs. But those CPU models (model 0x6b, 0x6f, 0x7f)
were packaged both as AM2 (desktop) and ASB1 (mobile). Thus the commit
leads to wrong temperature reporting for AM2 CPU parts.
The solution is to determine the package type for models 0x6b, 0x6f,
0x7f.
This is done using BrandId from CPUID Fn8000_0001_EBX[15:0]. See
"Constructing the processor Name String" in "Revision Guide for AMD
NPT Family 0Fh Processors" (Rev. 3.46).
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: stable@kernel.org [.32.x, .33.x, .34.x, .35.x]
Reported-by: Vladislav Guberinic <neosisani@gmail.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Fix the following build warning:
CC [M] drivers/hwmon/coretemp.o
drivers/hwmon/coretemp.c: In function "coretemp_init":
drivers/hwmon/coretemp.c:521: warning: unused variable "n"
drivers/hwmon/coretemp.c:521: warning: unused variable "p"
Introduced by commit 851b29cb3b. When
you drop code, you also have to drop the variables this code was
using.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Chen Gong <gong.chen@linux.intel.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Huaxu Wan <huaxu.wan@intel.com>
Casting "pep->tx_desc_dma" to to a struct tx_desc pointer makes gcc
complain:
drivers/net/pxa168_eth.c:657: warning:
cast to pointer from integer of different size
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The phy_mii_ioctl() function changed recently. It now takes a struct
ifreq pointer directly.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A couple issues here:
* Some resources weren't released.
* If alloc_etherdev() failed it would have caused a NULL dereference
because "pep" would be null when we checked "if (pep->clk)".
* Also it's better to propagate the error codes from mdiobus_register()
instead of just returning -ENOMEM.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
"pep->pd" isn't checked consistently in this function. For example it's
dereferenced unconditionally on the next line after the end of the if
condition. This function is only called from pxa168_eth_probe() and
pep->pd is always non-NULL so I removed the check.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It is possible that phylib will call adjust_link before returning
from {,of_}phy_connect(), which may cause the following [very rare,
though] oops upon reopening the device:
Unable to handle kernel paging request for data at address 0x0000024c
Oops: Kernel access of bad area, sig: 11 [#1]
PREEMPT SMP NR_CPUS=2 LTT NESTING LEVEL : 0
P1021 RDB
Modules linked in:
NIP: c0345dac LR: c0345dac CTR: c0345d84
TASK = dffab6b0[30] 'events/0' THREAD: c0d24000 CPU: 0
[...]
NIP [c0345dac] adjust_link+0x28/0x19c
LR [c0345dac] adjust_link+0x28/0x19c
Call Trace:
[c0d25f00] [000045e1] 0x45e1 (unreliable)
[c0d25f30] [c036c158] phy_state_machine+0x3ac/0x554
[...]
Here is why. Drivers store phydev in their private structures, e.g.
gianfar driver:
static int init_phy(struct net_device *dev)
{
...
priv->phydev = of_phy_connect(...);
...
}
So that adjust_link could retrieve it back:
static void adjust_link(struct net_device *dev)
{
...
struct phy_device *phydev = priv->phydev;
...
}
If the device has been opened before, then phydev->state is set to
PHY_HALTED (or undefined if the driver didn't call phy_stop()).
Now, phy_connect starts the PHY state machine before returning phydev to
the driver:
phy_start_machine(phydev, NULL);
if (phydev->irq > 0)
phy_start_interrupts(phydev);
return phydev;
The time between 'phy_start_machine()' and 'return phydev' is undefined.
The start machine routine delays execution for 1 second, which is enough
for most cases. But under heavy load, or if you're unlucky, it is quite
possible that PHY state machine will execute before phy_connect()
returns, and so adjust_link callback will try to dereference phydev,
which is not yet ready.
To fix the issue, simply initialize the PHY's state to PHY_READY during
phy_attach(). This will ensure that phylib won't call adjust_link before
phy_start().
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix this error on an s390 allyesconfig build:
linux-2.6/drivers/net/caif/caif_spi.c:98:
undefined reference to `dma_free_coherent'
Cc: Sjur Braendeland <sjur.brandeland@stericsson.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When converting this to the new wait_for macro I inverted the wait
condition, which causes all sorts of problems. So correct it to fix
several failures caused by the bad wait (flickering, bad output
detection, tearing, etc.).
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Xen events are logically edge triggered, as Xen only calls the event
upcall when an event is newly set, but not continuously as it remains set.
As a result, use handle_edge_irq rather than handle_level_irq.
This has the important side-effect of fixing a long-standing bug of
events getting lost if:
- an event's interrupt handler is running
- the event is migrated to a different vcpu
- the event is re-triggered
The most noticable symptom of these lost events is occasional lockups
of blkfront.
Many thanks to Tom Kopec and Daniel Stodden in tracking this down.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Tom Kopec <tek@acm.org>
Cc: Daniel Stodden <daniel.stodden@citrix.com>
Cc: Stable Kernel <stable@kernel.org>
IPIs and VIRQs are inherently per-cpu event types, so treat them as such:
- use a specific percpu irq_chip implementation, and
- handle them with handle_percpu_irq
This makes the path for delivering these interrupts more efficient
(no masking/unmasking, no locks), and it avoid problems with attempts
to migrate them.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stable Kernel <stable@kernel.org>
We should pass the data to the data register.
Signed-off-by: Jianwei Yang <jianwei.yang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It looks like there is an off-by-one error in one of your changes to
drivers/staging/rar_register/rar_register.c:
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This build bug triggers:
drivers/built-in.o: In function `mantis_exit':
(.text+0x377413): undefined reference to `ir_input_unregister'
drivers/built-in.o: In function `mantis_input_init':
(.text+0x3774ff): undefined reference to `__ir_input_register'
If MANTIS_CORE is enabled but IR_CORE is not. Add the correct
dependency.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Francisco Jerez