media: vim2m: use workqueue
v4l2_ctrl uses mutexes, so we can't setup a ctrl_handler in interrupt context. Switch to a workqueue instead and drop the timer. Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Reviewed-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
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