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Commit ca078bae authored by Pavel Machek's avatar Pavel Machek Committed by Linus Torvalds
Browse files

[PATCH] swsusp: switch pm_message_t to struct 



This adds type-checking to pm_message_t, so that people can't confuse it
with int or u32.  It also allows us to fix "disk yoyo" during suspend (disk
spinning down/up/down).

[We've tried that before; since that cpufreq problems were fixed and I've
tried make allyes config and fixed resulting damage.]

Signed-off-by: default avatarPavel Machek <pavel@suse.cz>
Signed-off-by: default avatarAlexander Nyberg <alexn@telia.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 829ca9a3

arch/ppc/syslib/of_device.c

+1 −1
Original line number Diff line number Diff line
@@ -105,7 +105,7 @@ static int of_device_remove(struct device *dev) 
	return 0;

}



static int of_device_suspend(struct device *dev, u32 state)

static int of_device_suspend(struct device *dev, pm_message_t state)

{

	struct of_device * of_dev = to_of_device(dev);

	struct of_platform_driver * drv = to_of_platform_driver(dev->driver);

drivers/base/power/resume.c

+4 −4
Original line number Diff line number Diff line
@@ -26,11 +26,11 @@ int resume_device(struct device * dev) 


	down(&dev->sem);

	if (dev->power.pm_parent

			&& dev->power.pm_parent->power.power_state) {

			&& dev->power.pm_parent->power.power_state.event) {

		dev_err(dev, "PM: resume from %d, parent %s still %d\n",

			dev->power.power_state,

			dev->power.power_state.event,

			dev->power.pm_parent->bus_id,

			dev->power.pm_parent->power.power_state);

			dev->power.pm_parent->power.power_state.event);

	}

	if (dev->bus && dev->bus->resume) {

		dev_dbg(dev,"resuming\n");
@@ -54,7 +54,7 @@ void dpm_resume(void) 
		list_add_tail(entry, &dpm_active);



		up(&dpm_list_sem);

		if (!dev->power.prev_state)

		if (!dev->power.prev_state.event)

			resume_device(dev);

		down(&dpm_list_sem);

		put_device(dev);

drivers/base/power/runtime.c

+4 −4
Original line number Diff line number Diff line
@@ -13,10 +13,10 @@ 
static void runtime_resume(struct device * dev)

{

	dev_dbg(dev, "resuming\n");

	if (!dev->power.power_state)

	if (!dev->power.power_state.event)

		return;

	if (!resume_device(dev))

		dev->power.power_state = 0;

		dev->power.power_state = PMSG_ON;

}
@@ -49,10 +49,10 @@ int dpm_runtime_suspend(struct device * dev, pm_message_t state) 
	int error = 0;



	down(&dpm_sem);

	if (dev->power.power_state == state)

	if (dev->power.power_state.event == state.event)

		goto Done;



	if (dev->power.power_state)

	if (dev->power.power_state.event)

		runtime_resume(dev);



	if (!(error = suspend_device(dev, state)))

drivers/base/power/suspend.c

+6 −6
Original line number Diff line number Diff line
@@ -40,22 +40,22 @@ int suspend_device(struct device * dev, pm_message_t state) 
	int error = 0;



	down(&dev->sem);

	if (dev->power.power_state) {

	if (dev->power.power_state.event) {

		dev_dbg(dev, "PM: suspend %d-->%d\n",

			dev->power.power_state, state);

			dev->power.power_state.event, state.event);

	}

	if (dev->power.pm_parent

			&& dev->power.pm_parent->power.power_state) {

			&& dev->power.pm_parent->power.power_state.event) {

		dev_err(dev,

			"PM: suspend %d->%d, parent %s already %d\n",

			dev->power.power_state, state,

			dev->power.power_state.event, state.event,

			dev->power.pm_parent->bus_id,

			dev->power.pm_parent->power.power_state);

			dev->power.pm_parent->power.power_state.event);

	}



	dev->power.prev_state = dev->power.power_state;



	if (dev->bus && dev->bus->suspend && !dev->power.power_state) {

	if (dev->bus && dev->bus->suspend && !dev->power.power_state.event) {

		dev_dbg(dev, "suspending\n");

		error = dev->bus->suspend(dev, state);

	}

drivers/base/power/sysfs.c

+4 −4
Original line number Diff line number Diff line
@@ -26,19 +26,19 @@ 


static ssize_t state_show(struct device * dev, struct device_attribute *attr, char * buf)

{

	return sprintf(buf, "%u\n", dev->power.power_state);

	return sprintf(buf, "%u\n", dev->power.power_state.event);

}



static ssize_t state_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t n)

{

	u32 state;

	pm_message_t state;

	char * rest;

	int error = 0;



	state = simple_strtoul(buf, &rest, 10);

	state.event = simple_strtoul(buf, &rest, 10);

	if (*rest)

		return -EINVAL;

	if (state)

	if (state.event)

		error = dpm_runtime_suspend(dev, state);

	else

		dpm_runtime_resume(dev);