3.8.13.20 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Sebastian Capella <[email protected]> commit f8d5b9e9e5372f0deb7bc1ab1088a9b60b0a793d upstream. During restore, pm_notifier chain are called with PM_RESTORE_PREPARE. The firmware_class driver handler fw_pm_notify does not have a handler for this. As a result, it keeps a reader on the kmod.c umhelper_sem. During freeze_processes, the call to __usermodehelper_disable tries to take a write lock on this semaphore and hangs waiting. Signed-off-by: Sebastian Capella <[email protected]> Acked-by: Ming Lei <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]> Signed-off-by: Kamal Mostafa <[email protected]> --- drivers/base/firmware_class.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index b392b35..abb2054 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -1413,6 +1413,7 @@ static int fw_pm_notify(struct notifier_block *notify_block, switch (mode) { case PM_HIBERNATION_PREPARE: case PM_SUSPEND_PREPARE: + case PM_RESTORE_PREPARE: device_cache_fw_images(); break; -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
