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media: v4l2-mem2mem: fix epoll() by calling poll_wait first
authorHans Verkuil <hverkuil-cisco@xs4all.nl>
Thu, 7 Feb 2019 11:49:45 +0000 (06:49 -0500)
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Mon, 18 Feb 2019 19:47:04 +0000 (14:47 -0500)
commitc26a9135f363ae984f0ec9d7a30517d39b2c5590
tree64c03f2ea64c11b2d13332cc8863e5bd3ba37185tree | snapshot
parentfb69e6ac0c3045b2446c93b1f60178545b2cb28ecommit | diff
media: v4l2-mem2mem: fix epoll() by calling poll_wait first

The epoll function expects that whenever the poll file op is
called, the poll_wait function is also called. That didn't
always happen in v4l2_m2m_poll(). Fix this, otherwise
epoll() would timeout when it shouldn't.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
drivers/media/v4l2-core/v4l2-mem2mem.c diff | blob | history
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