diff options
Diffstat (limited to 'drivers/base/power/main.c')
| -rw-r--r-- | drivers/base/power/main.c | 35 |
1 files changed, 30 insertions, 5 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 077b9756fd8f..008e6786ae79 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -57,20 +57,17 @@ static pm_message_t pm_transition; static int async_error; /** - * device_pm_init - Initialize the PM-related part of a device object. + * device_pm_sleep_init - Initialize system suspend-related device fields. * @dev: Device object being initialized. */ -void device_pm_init(struct device *dev) +void device_pm_sleep_init(struct device *dev) { dev->power.is_prepared = false; dev->power.is_suspended = false; init_completion(&dev->power.completion); complete_all(&dev->power.completion); dev->power.wakeup = NULL; - spin_lock_init(&dev->power.lock); - pm_runtime_init(dev); INIT_LIST_HEAD(&dev->power.entry); - dev->power.power_state = PMSG_INVALID; } /** @@ -408,6 +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); @@ -429,6 +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; } @@ -486,6 +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); @@ -507,6 +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; } @@ -569,6 +574,9 @@ 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); @@ -630,6 +638,8 @@ 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); @@ -717,6 +727,9 @@ 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 +844,9 @@ 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 +930,9 @@ 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); @@ -1054,6 +1073,9 @@ 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) { @@ -1208,6 +1230,9 @@ static int device_prepare(struct device *dev, pm_message_t state) char *info = NULL; int error = 0; + if (dev->power.syscore) + return 0; + /* * If a device's parent goes into runtime suspend at the wrong time, * it won't be possible to resume the device. To prevent this we |