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Message-Id: <201105070032.27540.rjw@sisk.pl> Date: Sat, 7 May 2011 00:32:27 +0200 From: "Rafael J. Wysocki" <rjw@...k.pl> To: Linux PM mailing list <linux-pm@...ts.linux-foundation.org> Cc: LKML <linux-kernel@...r.kernel.org>, Alexandre Felipe Muller de Souza <alexandrefm@...driva.com.br> Subject: [PATCH 3/3] PM / Hibernate: Fix ioctl SNAPSHOT_S2RAM From: Rafael J. Wysocki <rjw@...k.pl> 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. Signed-off-by: Rafael J. Wysocki <rjw@...k.pl> --- kernel/power/user.c | 1 + 1 file changed, 1 insertion(+) Index: linux-2.6/kernel/power/user.c =================================================================== --- linux-2.6.orig/kernel/power/user.c +++ linux-2.6/kernel/power/user.c @@ -381,6 +381,7 @@ static long snapshot_ioctl(struct file * * PM_HIBERNATION_PREPARE */ error = suspend_devices_and_enter(PM_SUSPEND_MEM); + data->ready = 0; break; case SNAPSHOT_PLATFORM_SUPPORT: -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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