Messages in this thread | | | Date | Mon, 24 Feb 2014 15:09:38 +0800 | Subject | Re: [PATCH RFC v1 2/3] Fix hibernation restore hang in freeze_processes | From | Ming Lei <> |
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On Wed, Feb 19, 2014 at 9:52 AM, Sebastian Capella <sebastian.capella@linaro.org> wrote: > 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 <sebastian.capella@linaro.org> > Cc: Russ Dill <Russ.Dill@ti.com> > Cc: Ming Lei <ming.lei@canonical.com> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Ming Lei <ming.lei@canonical.com>
Thanks, -- Ming Lei
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