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由 Sylwester Nawrocki 提交于
Without the locking the driver's data could get corrupted when the subdev is accessed from user space and from host driver by multiple processes. Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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