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media: vim2m: Register video device after setting up internals
commit cf7f347 upstream. Prevent NULL (or close to NULL) pointer dereference in various places by registering the video device only when the V4L2 m2m framework has been set up. Fixes: commit 96d8eab ("V4L/DVB: [v5,2/2] v4l: Add a mem-to-mem videobuf framework test device") Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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