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[PATCH] Driver core: Don't "lose" devices on suspend on failure

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I think we need this patch or we might "lose" devices to the dpm_irq_off
list if a failure occurs during the suspend process.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Benjamin Herrenschmidt 2005-05-31 17:08:49 +10:00 committed by Greg Kroah-Hartman
parent 8215534ce7
commit 42b16c051c
1 changed files with 12 additions and 1 deletions
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13
drivers/base/power/suspend.c
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@ -114,8 +114,19 @@ int device_suspend(pm_message_t state)
put_device(dev);
}
up(&dpm_list_sem);
if (error)
if (error) {
/* we failed... before resuming, bring back devices from
* dpm_off_irq list back to main dpm_off list, we do want
* to call resume() on them, in case they partially suspended
* despite returning -EAGAIN
*/
while (!list_empty(&dpm_off_irq)) {
struct list_head * entry = dpm_off_irq.next;
list_del(entry);
list_add(entry, &dpm_off);
}
dpm_resume();
}
up(&dpm_sem);
return error;
}