From: Rafael J. Wysocki Date: Tue, 10 May 2011 19:10:13 +0000 (+0200) Subject: PM / Hibernate: Fix ioctl SNAPSHOT_S2RAM X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=36cb7035ea0c11ef2c7fa2bbe0cd181b23569b29;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git 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 Signed-off-by: Rafael J. Wysocki Cc: stable@kernel.org --- diff --git a/kernel/power/user.c b/kernel/power/user.c index 6522be913ac..7d02d33be69 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -381,6 +381,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd, * PM_HIBERNATION_PREPARE */ error = suspend_devices_and_enter(PM_SUSPEND_MEM); + data->ready = 0; break; case SNAPSHOT_PLATFORM_SUPPORT: