Commit 3d2699bc authored by Liu, Chuansheng's avatar Liu, Chuansheng Committed by Rafael J. Wysocki
Browse files

PM / sleep: Two flags for async suspend_noirq and suspend_late 



The patch is a helper adding two new flags for implementing
async threads for suspend_noirq and suspend_late.

Signed-off-by: default avatarChuansheng Liu <chuansheng.liu@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 6d0abeca

drivers/base/power/main.c

+22 −2
Original line number Diff line number Diff line
@@ -91,6 +91,8 @@ void device_pm_sleep_init(struct device *dev) 
{

	dev->power.is_prepared = false;

	dev->power.is_suspended = false;

	dev->power.is_noirq_suspended = false;

	dev->power.is_late_suspended = false;

	init_completion(&dev->power.completion);

	complete_all(&dev->power.completion);

	dev->power.wakeup = NULL;
@@ -479,6 +481,9 @@ static int device_resume_noirq(struct device *dev, pm_message_t state) 
	if (dev->power.syscore)

		goto Out;



	if (!dev->power.is_noirq_suspended)

		goto Out;



	if (dev->pm_domain) {

		info = "noirq power domain ";

		callback = pm_noirq_op(&dev->pm_domain->ops, state);
@@ -499,6 +504,7 @@ static int device_resume_noirq(struct device *dev, pm_message_t state) 
	}



	error = dpm_run_callback(callback, dev, state, info);

	dev->power.is_noirq_suspended = false;



 Out:

	TRACE_RESUME(error);
@@ -561,6 +567,9 @@ static int device_resume_early(struct device *dev, pm_message_t state) 
	if (dev->power.syscore)

		goto Out;



	if (!dev->power.is_late_suspended)

		goto Out;



	if (dev->pm_domain) {

		info = "early power domain ";

		callback = pm_late_early_op(&dev->pm_domain->ops, state);
@@ -581,6 +590,7 @@ static int device_resume_early(struct device *dev, pm_message_t state) 
	}



	error = dpm_run_callback(callback, dev, state, info);

	dev->power.is_late_suspended = false;



 Out:

	TRACE_RESUME(error);
@@ -917,6 +927,7 @@ static int device_suspend_noirq(struct device *dev, pm_message_t state) 
{

	pm_callback_t callback = NULL;

	char *info = NULL;

	int error;



	if (dev->power.syscore)

		return 0;
@@ -940,7 +951,11 @@ static int device_suspend_noirq(struct device *dev, pm_message_t state) 
		callback = pm_noirq_op(dev->driver->pm, state);

	}



	return dpm_run_callback(callback, dev, state, info);

	error = dpm_run_callback(callback, dev, state, info);

	if (!error)

		dev->power.is_noirq_suspended = true;



	return error;

}



/**
@@ -1003,6 +1018,7 @@ static int device_suspend_late(struct device *dev, pm_message_t state) 
{

	pm_callback_t callback = NULL;

	char *info = NULL;

	int error;



	__pm_runtime_disable(dev, false);
@@ -1028,7 +1044,11 @@ static int device_suspend_late(struct device *dev, pm_message_t state) 
		callback = pm_late_early_op(dev->driver->pm, state);

	}



	return dpm_run_callback(callback, dev, state, info);

	error = dpm_run_callback(callback, dev, state, info);

	if (!error)

		dev->power.is_late_suspended = true;



	return error;

}



/**

include/linux/pm.h

+2 −0
Original line number Diff line number Diff line
@@ -542,6 +542,8 @@ struct dev_pm_info { 
	unsigned int		async_suspend:1;

	bool			is_prepared:1;	/* Owned by the PM core */

	bool			is_suspended:1;	/* Ditto */

	bool			is_noirq_suspended:1;

	bool			is_late_suspended:1;

	bool			ignore_children:1;

	bool			early_init:1;	/* Owned by the PM core */

	spinlock_t		lock;