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PM: Fix warning in pm_restrict_gfp_mask() during SNAPSHOT_S2RAM ioctl 

A warning is printed by pm_restrict_gfp_mask() while the
SNAPSHOT_S2RAM ioctl is being executed after creating a hibernation
image, because pm_restrict_gfp_mask() has been called once already
before the image creation and suspend_devices_and_enter() calls it
once again.  This happens after commit 452aa6999e
(mm/pm: force GFP_NOIO during suspend/hibernation and resume).

To avoid this issue, move pm_restrict_gfp_mask() and
pm_restore_gfp_mask() from suspend_devices_and_enter() to its caller
in kernel/power/suspend.c.

Reported-by: Alexandre Felipe Muller de Souza <alexandrefm@mandriva.com.br>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: stable@kernel.org
This commit is contained in:
Rafael J. Wysocki 2011-05-10 21:09:53 +02:00
parent 54b333529d
commit 87186475a4
1 changed files with 2 additions and 2 deletions
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4
kernel/power/suspend.c
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@ -216,7 +216,6 @@ int suspend_devices_and_enter(suspend_state_t state)
goto Close;
}
suspend_console();
pm_restrict_gfp_mask();
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
@ -233,7 +232,6 @@ int suspend_devices_and_enter(suspend_state_t state)
suspend_test_start();
dpm_resume_end(PMSG_RESUME);
suspend_test_finish("resume devices");
pm_restore_gfp_mask();
resume_console();
Close:
if (suspend_ops->end)
@ -294,7 +292,9 @@ int enter_state(suspend_state_t state)
goto Finish;
pr_debug("PM: Entering %s sleep\n", pm_states[state]);
pm_restrict_gfp_mask();
error = suspend_devices_and_enter(state);
pm_restore_gfp_mask();
Finish:
pr_debug("PM: Finishing wakeup.\n");