Commit 36cb7035 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki

PM / Hibernate: Fix ioctl SNAPSHOT_S2RAM

The SNAPSHOT_S2RAM ioctl used for implementing the feature allowing
one to suspend to RAM after creating a hibernation image is currently
broken, because it doesn't clear the "ready" flag in the struct
snapshot_data object handled by it.  As a result, the
SNAPSHOT_UNFREEZE doesn't work correctly after SNAPSHOT_S2RAM has
returned and the user space hibernate task cannot thaw the other
processes as appropriate.  Make SNAPSHOT_S2RAM clear data->ready
to fix this problem.
Tested-by: default avatarAlexandre Felipe Muller de Souza <alexandrefm@mandriva.com.br>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Cc: stable@kernel.org
parent 9744997a
...@@ -381,6 +381,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd, ...@@ -381,6 +381,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd,
* PM_HIBERNATION_PREPARE * PM_HIBERNATION_PREPARE
*/ */
error = suspend_devices_and_enter(PM_SUSPEND_MEM); error = suspend_devices_and_enter(PM_SUSPEND_MEM);
data->ready = 0;
break; break;
case SNAPSHOT_PLATFORM_SUPPORT: case SNAPSHOT_PLATFORM_SUPPORT:
......
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