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-rw-r--r--drivers/base/power/common.c15
-rw-r--r--drivers/base/power/domain.c37
-rw-r--r--drivers/base/power/main.c28
-rw-r--r--drivers/base/power/runtime.c2
-rw-r--r--drivers/clocksource/sh_cmt.c2
-rw-r--r--drivers/clocksource/sh_mtu2.c2
-rw-r--r--drivers/clocksource/sh_tmu.c2
-rw-r--r--include/linux/pm.h5
-rw-r--r--include/linux/pm_domain.h3
9 files changed, 58 insertions, 38 deletions
diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c
index 39c32529b833..cf7a85134730 100644
--- a/drivers/base/power/common.c
+++ b/drivers/base/power/common.c
@@ -83,3 +83,18 @@ int dev_pm_put_subsys_data(struct device *dev)
return ret;
}
EXPORT_SYMBOL_GPL(dev_pm_put_subsys_data);
+
+/**
+ * dev_pm_syscore_device - Set/unset the given device's power.syscore flag.
+ * @dev: Device whose flag is to be modified.
+ * @val: New value of the flag.
+ */
+void dev_pm_syscore_device(struct device *dev, bool val)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->power.lock, flags);
+ dev->power.syscore = val;
+ spin_unlock_irqrestore(&dev->power.lock, flags);
+}
+EXPORT_SYMBOL_GPL(dev_pm_syscore_device);
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 15234ecd7edb..52172754ff78 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -436,7 +436,7 @@ static int pm_genpd_poweroff(struct generic_pm_domain *genpd)
not_suspended = 0;
list_for_each_entry(pdd, &genpd->dev_list, list_node)
if (pdd->dev->driver && (!pm_runtime_suspended(pdd->dev)
- || pdd->dev->power.irq_safe || to_gpd_data(pdd)->syscore))
+ || pdd->dev->power.irq_safe || pdd->dev->power.syscore))
not_suspended++;
if (not_suspended > genpd->in_progress)
@@ -578,9 +578,6 @@ static int pm_genpd_runtime_suspend(struct device *dev)
might_sleep_if(!genpd->dev_irq_safe);
- if (dev_gpd_data(dev)->syscore)
- return -EBUSY;
-
stop_ok = genpd->gov ? genpd->gov->stop_ok : NULL;
if (stop_ok && !stop_ok(dev))
return -EBUSY;
@@ -983,7 +980,7 @@ static int pm_genpd_suspend_noirq(struct device *dev)
if (IS_ERR(genpd))
return -EINVAL;
- if (genpd->suspend_power_off || dev_gpd_data(dev)->syscore
+ if (genpd->suspend_power_off
|| (dev->power.wakeup_path && genpd_dev_active_wakeup(genpd, dev)))
return 0;
@@ -1016,7 +1013,7 @@ static int pm_genpd_resume_noirq(struct device *dev)
if (IS_ERR(genpd))
return -EINVAL;
- if (genpd->suspend_power_off || dev_gpd_data(dev)->syscore
+ if (genpd->suspend_power_off
|| (dev->power.wakeup_path && genpd_dev_active_wakeup(genpd, dev)))
return 0;
@@ -1136,8 +1133,7 @@ static int pm_genpd_freeze_noirq(struct device *dev)
if (IS_ERR(genpd))
return -EINVAL;
- return genpd->suspend_power_off || dev_gpd_data(dev)->syscore ?
- 0 : genpd_stop_dev(genpd, dev);
+ return genpd->suspend_power_off ? 0 : genpd_stop_dev(genpd, dev);
}
/**
@@ -1157,8 +1153,7 @@ static int pm_genpd_thaw_noirq(struct device *dev)
if (IS_ERR(genpd))
return -EINVAL;
- return genpd->suspend_power_off || dev_gpd_data(dev)->syscore ?
- 0 : genpd_start_dev(genpd, dev);
+ return genpd->suspend_power_off ? 0 : genpd_start_dev(genpd, dev);
}
/**
@@ -1253,7 +1248,7 @@ static int pm_genpd_restore_noirq(struct device *dev)
pm_genpd_sync_poweron(genpd);
- return dev_gpd_data(dev)->syscore ? 0 : genpd_start_dev(genpd, dev);
+ return genpd_start_dev(genpd, dev);
}
/**
@@ -1526,26 +1521,6 @@ int pm_genpd_remove_device(struct generic_pm_domain *genpd,
}
/**
- * pm_genpd_dev_syscore - Set/unset the "syscore" flag for a given device.
- * @dev: Device to set/unset the flag for.
- * @val: The new value of the device's "syscore" flag.
- */
-void pm_genpd_dev_syscore(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)->syscore = val;
-
- spin_unlock_irqrestore(&dev->power.lock, flags);
-}
-EXPORT_SYMBOL_GPL(pm_genpd_dev_syscore);
-
-/**
* 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.
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 7bd1fe400549..57f5814c2732 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -405,6 +405,9 @@ static int device_resume_noirq(struct device *dev, pm_message_t state)
TRACE_DEVICE(dev);
TRACE_RESUME(0);
+ if (dev->power.syscore)
+ goto Out;
+
if (dev->pm_domain) {
info = "noirq power domain ";
callback = pm_noirq_op(&dev->pm_domain->ops, state);
@@ -426,6 +429,7 @@ static int device_resume_noirq(struct device *dev, pm_message_t state)
error = dpm_run_callback(callback, dev, state, info);
+ Out:
TRACE_RESUME(error);
return error;
}
@@ -483,6 +487,9 @@ static int device_resume_early(struct device *dev, pm_message_t state)
TRACE_DEVICE(dev);
TRACE_RESUME(0);
+ if (dev->power.syscore)
+ goto Out;
+
if (dev->pm_domain) {
info = "early power domain ";
callback = pm_late_early_op(&dev->pm_domain->ops, state);
@@ -504,6 +511,7 @@ static int device_resume_early(struct device *dev, pm_message_t state)
error = dpm_run_callback(callback, dev, state, info);
+ Out:
TRACE_RESUME(error);
return error;
}
@@ -567,6 +575,9 @@ static int device_resume(struct device *dev, pm_message_t state, bool async)
TRACE_DEVICE(dev);
TRACE_RESUME(0);
+ if (dev->power.syscore)
+ goto Complete;
+
dpm_wait(dev->parent, async);
device_lock(dev);
@@ -629,6 +640,8 @@ static int device_resume(struct device *dev, pm_message_t state, bool async)
Unlock:
device_unlock(dev);
+
+ Complete:
complete_all(&dev->power.completion);
TRACE_RESUME(error);
@@ -719,6 +732,9 @@ static void device_complete(struct device *dev, pm_message_t state)
void (*callback)(struct device *) = NULL;
char *info = NULL;
+ if (dev->power.syscore)
+ return;
+
device_lock(dev);
if (dev->pm_domain) {
@@ -831,6 +847,9 @@ static int device_suspend_noirq(struct device *dev, pm_message_t state)
pm_callback_t callback = NULL;
char *info = NULL;
+ if (dev->power.syscore)
+ return 0;
+
if (dev->pm_domain) {
info = "noirq power domain ";
callback = pm_noirq_op(&dev->pm_domain->ops, state);
@@ -914,6 +933,9 @@ static int device_suspend_late(struct device *dev, pm_message_t state)
pm_callback_t callback = NULL;
char *info = NULL;
+ if (dev->power.syscore)
+ return 0;
+
if (dev->pm_domain) {
info = "late power domain ";
callback = pm_late_early_op(&dev->pm_domain->ops, state);
@@ -1050,6 +1072,9 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
goto Complete;
}
+ if (dev->power.syscore)
+ goto Complete;
+
device_lock(dev);
if (dev->pm_domain) {
@@ -1206,6 +1231,9 @@ static int device_prepare(struct device *dev, pm_message_t state)
char *info = NULL;
int error = 0;
+ if (dev->power.syscore)
+ return 0;
+
device_lock(dev);
dev->power.wakeup_path = device_may_wakeup(dev);
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 7d9c1cb1c39a..bd1de3980919 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -134,7 +134,7 @@ static int rpm_check_suspend_allowed(struct device *dev)
if (dev->power.runtime_error)
retval = -EINVAL;
- else if (dev->power.disable_depth > 0)
+ else if (dev->power.disable_depth > 0 || dev->power.syscore)
retval = -EACCES;
else if (atomic_read(&dev->power.usage_count) > 0)
retval = -EAGAIN;
diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c
index c6fbb9f71911..a515605bf8f5 100644
--- a/drivers/clocksource/sh_cmt.c
+++ b/drivers/clocksource/sh_cmt.c
@@ -717,7 +717,7 @@ static int __devinit sh_cmt_probe(struct platform_device *pdev)
struct sh_timer_config *cfg = pdev->dev.platform_data;
if (cfg->clocksource_rating || cfg->clockevent_rating)
- pm_genpd_dev_syscore(&pdev->dev, true);
+ dev_pm_syscore_device(&pdev->dev, true);
}
if (p) {
diff --git a/drivers/clocksource/sh_mtu2.c b/drivers/clocksource/sh_mtu2.c
index 278c18abb2ae..1a95cad96819 100644
--- a/drivers/clocksource/sh_mtu2.c
+++ b/drivers/clocksource/sh_mtu2.c
@@ -323,7 +323,7 @@ static int __devinit sh_mtu2_probe(struct platform_device *pdev)
struct sh_timer_config *cfg = pdev->dev.platform_data;
if (cfg->clockevent_rating)
- pm_genpd_dev_syscore(&pdev->dev, true);
+ dev_pm_syscore_device(&pdev->dev, true);
}
if (p) {
diff --git a/drivers/clocksource/sh_tmu.c b/drivers/clocksource/sh_tmu.c
index 5319689c579c..81b0239718ee 100644
--- a/drivers/clocksource/sh_tmu.c
+++ b/drivers/clocksource/sh_tmu.c
@@ -453,7 +453,7 @@ static int __devinit sh_tmu_probe(struct platform_device *pdev)
struct sh_timer_config *cfg = pdev->dev.platform_data;
if (cfg->clocksource_rating || cfg->clockevent_rating)
- pm_genpd_dev_syscore(&pdev->dev, true);
+ dev_pm_syscore_device(&pdev->dev, true);
}
if (p) {
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 716517af1543..b79a0dd3bc6d 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -43,8 +43,12 @@ struct device;
#ifdef CONFIG_PM
extern const char power_group_name[]; /* = "power" */
+
+extern void dev_pm_syscore_device(struct device *dev, bool val);
#else
#define power_group_name NULL
+
+static inline void dev_pm_syscore_device(struct device *dev, bool val) {}
#endif
typedef struct pm_message {
@@ -511,6 +515,7 @@ struct dev_pm_info {
bool is_suspended:1; /* Ditto */
bool ignore_children:1;
bool early_init:1; /* Owned by the PM core */
+ bool syscore:1;
spinlock_t lock;
#ifdef CONFIG_PM_SLEEP
struct list_head entry;
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index dab0938603fa..08adf8e5a80e 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -114,7 +114,6 @@ struct generic_pm_domain_data {
struct mutex lock;
unsigned int refcount;
bool need_restore;
- bool syscore;
};
#ifdef CONFIG_PM_GENERIC_DOMAINS
@@ -153,7 +152,6 @@ 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_syscore(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);
@@ -199,7 +197,6 @@ static inline int pm_genpd_remove_device(struct generic_pm_domain *genpd,
{
return -ENOSYS;
}
-static inline void pm_genpd_dev_syscore(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)
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-10 18:54:20 +0000