[media] s5p-fimc: Prevent hanging on device close and fix the locking

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Rework the locking in m2m driver to assure proper operation on SMP systems.

When job_abort or stop_streaming was called to immediately shutdown
a memory-to-memory transaction video buffers scheduled for processing
were never returned to vb2 and v4l2_m2m_job_finish was not called
which led to hanging.

Correct this and also return the unprocessed buffers to vb2 marking
them as erroneous, in case the end of frame interrupt do not occur.

Reported-by: Sewoon Park <seuni.park@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

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Sylwester Nawrocki 2011-02-23 08:24:33 -03:00 • committed by Mauro Carvalho Chehab

parent a0f8caefaf

commit 4ecbf5d1d2

3 changed files with 136 additions and 114 deletions

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9

drivers/media/video/s5p-fimc/fimc-capture.c

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203

drivers/media/video/s5p-fimc/fimc-core.c

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44

drivers/media/video/s5p-fimc/fimc-core.h

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