media: v4l2-dv-timings: add sanity checks for blanking values
[ Upstream commit 4b6d66a4 ] Add sanity checks to v4l2_valid_dv_timings() to ensure that the provided blanking values are reasonable. Signed-off-by: NHans Verkuil <hverkuil-cisco@xs4all.nl> Fixes: b18787ed ([media] v4l2-dv-timings: add new helper module) Signed-off-by: NMauro Carvalho Chehab <mchehab@kernel.org> Signed-off-by: NSasha Levin <sashal@kernel.org>
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