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: Alexandre Felipe Muller de Souza <alexandrefm@mandriva.com.br> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: stable@kernel.org
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@ -381,6 +381,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd,
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* PM_HIBERNATION_PREPARE
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*/
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error = suspend_devices_and_enter(PM_SUSPEND_MEM);
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data->ready = 0;
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break;
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case SNAPSHOT_PLATFORM_SUPPORT:
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