Messages in this thread | | | Date | Wed, 8 May 2013 23:56:51 +0800 | Subject | Re: [PATCH 2/3] firmware: Avoid deadlock of usermodehelper lock at shutdown | From | Ming Lei <> |
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On Wed, May 8, 2013 at 2:56 PM, Takashi Iwai <tiwai@suse.de> wrote: > When a system goes to reboot/shutdown, it tries to disable the > usermode helper via usermodehelper_disable(). This might be blocked > when a driver tries to load a firmware beforehand and it's stuck by > some reason.
IMO, it is better to find why the loading is stuck. Also we already provides the timeout sysfs file to help to deal with the situation.
> > In this patch, the firmware class driver registers a reboot notifier > so that it can abort all pending f/w bufs. Also enable a flag for > avoiding the call of usermodehelper after the reboot/shutdown starts.
With this patch, maybe we only hide the real problem.
Thanks, -- Ming Lei
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