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PM: no suspend_prepare() phase

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Remove the new suspend_prepare() phase.  It doesn't seem very usable,
has never been tested, doesn't address fault cleanup, and would need
a sibling resume_complete(); plus there are no real use cases.  It
could be restored later if those issues get resolved.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Brownell
2006-08-30 14:09:47 -07:00
committed by Greg Kroah-Hartman
parent 1ebfd79eb4
commit 1d3a82af45
5 changed files with 0 additions and 47 deletions
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27
drivers/base/power/suspend.c
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@@ -117,33 +117,6 @@ static int suspend_device_late(struct device *dev, pm_message_t state)
return error;
}
/**
* device_prepare_suspend - save state and prepare to suspend
*
* NOTE! Devices cannot detach at this point - not only do we
* hold the device list semaphores over the whole prepare, but
* the whole point is to do non-invasive preparatory work, not
* the actual suspend.
*/
int device_prepare_suspend(pm_message_t state)
{
int error = 0;
struct device * dev;
down(&dpm_sem);
down(&dpm_list_sem);
list_for_each_entry_reverse(dev, &dpm_active, power.entry) {
if (!dev->bus || !dev->bus->suspend_prepare)
continue;
error = dev->bus->suspend_prepare(dev, state);
if (error)
break;
}
up(&dpm_list_sem);
up(&dpm_sem);
return error;
}
/**
* device_suspend - Save state and stop all devices in system.
* @state: Power state to put each device in.