Hi Hans,
2015-07-20 10:58 GMT+03:00 Hans Verkuil :
>
> Since vb2_fop_mmap doesn't take the lock, neither should v4l2_m2m_fop_mmap.
>
> Signed-off-by: Hans Verkuil
[snip]
Tested-by: Mikhail Ulyanov
--
W.B.R, Mikhail.
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The v4l2_m2m_fop_mmap function takes the core mutex, but this will result in a
potential
circular locking dependency:
[ 262.517164] ==
[ 262.517166] [ INFO: possible circular locking dependency detected ]
[ 262.517169] 4.2.0-rc2-koryphon #844
