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linux-2.6
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Merge branch 'pm-domains' 

* pm-domains:
  PM / Domains: Make it possible to add devices to inactive domains
This commit is contained in:
Rafael J. Wysocki 2012-05-18 20:46:17 +02:00
parent 351520a9eb ca1d72f033
commit 06132ee903
2 changed files with 23 additions and 6 deletions
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27
drivers/base/power/domain.c
View File

@ -1263,11 +1263,6 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
genpd_acquire_lock(genpd);
if (genpd->status == GPD_STATE_POWER_OFF) {
ret = -EINVAL;
goto out;
}
if (genpd->prepared_count > 0) {
ret = -EAGAIN;
goto out;
@ -1290,7 +1285,7 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
dev->power.subsys_data->domain_data = &gpd_data->base;
gpd_data->base.dev = dev;
list_add_tail(&gpd_data->base.list_node, &genpd->dev_list);
gpd_data->need_restore = false;
gpd_data->need_restore = genpd->status == GPD_STATE_POWER_OFF;
if (td)
gpd_data->td = *td;
@ -1417,6 +1412,26 @@ void pm_genpd_dev_always_on(struct device *dev, bool val)
}
EXPORT_SYMBOL_GPL(pm_genpd_dev_always_on);
/**
* pm_genpd_dev_need_restore - Set/unset the device's "need restore" flag.
* @dev: Device to set/unset the flag for.
* @val: The new value of the device's "need restore" flag.
*/
void pm_genpd_dev_need_restore(struct device *dev, bool val)
{
struct pm_subsys_data *psd;
unsigned long flags;
spin_lock_irqsave(&dev->power.lock, flags);
psd = dev_to_psd(dev);
if (psd && psd->domain_data)
to_gpd_data(psd->domain_data)->need_restore = val;
spin_unlock_irqrestore(&dev->power.lock, flags);
}
EXPORT_SYMBOL_GPL(pm_genpd_dev_need_restore);
/**
* pm_genpd_add_subdomain - Add a subdomain to an I/O PM domain.
* @genpd: Master PM domain to add the subdomain to.

2
include/linux/pm_domain.h
View File

@ -146,6 +146,7 @@ static inline int pm_genpd_of_add_device(struct device_node *genpd_node,
extern int pm_genpd_remove_device(struct generic_pm_domain *genpd,
struct device *dev);
extern void pm_genpd_dev_always_on(struct device *dev, bool val);
extern void pm_genpd_dev_need_restore(struct device *dev, bool val);
extern int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
struct generic_pm_domain *new_subdomain);
extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
@ -189,6 +190,7 @@ static inline int pm_genpd_remove_device(struct generic_pm_domain *genpd,
return -ENOSYS;
}
static inline void pm_genpd_dev_always_on(struct device *dev, bool val) {}
static inline void pm_genpd_dev_need_restore(struct device *dev, bool val) {}
static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
struct generic_pm_domain *new_sd)
{