Commit 770824bd authored by Rafael J. Wysocki's avatar Rafael J. Wysocki Committed by Linus Torvalds
Browse files

PM: Split up sysdev_[suspend|resume] from device_power_[down|up] 



Move the sysdev_suspend/resume from the callee to the callers, with
no real change in semantics, so that we can rework the disabling of
interrupts during suspend/hibernation.

This is based on an earlier patch from Linus.

Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 936577c6

arch/x86/kernel/apm_32.c

+4 −0
Original line number Diff line number Diff line
@@ -1192,6 +1192,7 @@ static int suspend(int vetoable) 
	device_suspend(PMSG_SUSPEND);

	local_irq_disable();

	device_power_down(PMSG_SUSPEND);

	sysdev_suspend(PMSG_SUSPEND);



	local_irq_enable();
@@ -1208,6 +1209,7 @@ static int suspend(int vetoable) 
	if (err != APM_SUCCESS)

		apm_error("suspend", err);

	err = (err == APM_SUCCESS) ? 0 : -EIO;

	sysdev_resume();

	device_power_up(PMSG_RESUME);

	local_irq_enable();

	device_resume(PMSG_RESUME);
@@ -1228,6 +1230,7 @@ static void standby(void) 


	local_irq_disable();

	device_power_down(PMSG_SUSPEND);

	sysdev_suspend(PMSG_SUSPEND);

	local_irq_enable();



	err = set_system_power_state(APM_STATE_STANDBY);
@@ -1235,6 +1238,7 @@ static void standby(void) 
		apm_error("standby", err);



	local_irq_disable();

	sysdev_resume();

	device_power_up(PMSG_RESUME);

	local_irq_enable();

}

drivers/base/base.h

+0 −2
Original line number Diff line number Diff line
@@ -88,8 +88,6 @@ extern void driver_detach(struct device_driver *drv); 
extern int driver_probe_device(struct device_driver *drv, struct device *dev);



extern void sysdev_shutdown(void);

extern int sysdev_suspend(pm_message_t state);

extern int sysdev_resume(void);



extern char *make_class_name(const char *name, struct kobject *kobj);

drivers/base/power/main.c

+0 −3
Original line number Diff line number Diff line
@@ -333,7 +333,6 @@ static void dpm_power_up(pm_message_t state) 
 */

void device_power_up(pm_message_t state)

{

	sysdev_resume();

	dpm_power_up(state);

}

EXPORT_SYMBOL_GPL(device_power_up);
@@ -577,8 +576,6 @@ int device_power_down(pm_message_t state) 
		}

		dev->power.status = DPM_OFF_IRQ;

	}

	if (!error)

		error = sysdev_suspend(state);

	if (error)

		dpm_power_up(resume_event(state));

	return error;

drivers/xen/manage.c

+8 −0
Original line number Diff line number Diff line
@@ -45,6 +45,13 @@ static int xen_suspend(void *data) 
		       err);

		return err;

	}

	err = sysdev_suspend(PMSG_SUSPEND);

	if (err) {

		printk(KERN_ERR "xen_suspend: sysdev_suspend failed: %d\n",

			err);

		device_power_up(PMSG_RESUME);

		return err;

	}



	xen_mm_pin_all();

	gnttab_suspend();
@@ -61,6 +68,7 @@ static int xen_suspend(void *data) 
	gnttab_resume();

	xen_mm_unpin_all();



	sysdev_resume();

	device_power_up(PMSG_RESUME);



	if (!*cancelled) {

include/linux/pm.h

+2 −0
Original line number Diff line number Diff line
@@ -381,10 +381,12 @@ struct dev_pm_info { 


#ifdef CONFIG_PM_SLEEP

extern void device_pm_lock(void);

extern int sysdev_resume(void);

extern void device_power_up(pm_message_t state);

extern void device_resume(pm_message_t state);



extern void device_pm_unlock(void);

extern int sysdev_suspend(pm_message_t state);

extern int device_power_down(pm_message_t state);

extern int device_suspend(pm_message_t state);

extern int device_prepare_suspend(pm_message_t state);

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