| Message ID | 20190930100636.18318-8-ribalda@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Implement UNIT_CELL_SIZE control | expand |
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h index c42f164e2c9e..d69cfdffd41d 100644 --- a/include/media/v4l2-ctrls.h +++ b/include/media/v4l2-ctrls.h @@ -73,6 +73,17 @@ union v4l2_ctrl_ptr { void *p; }; +/** + * v4l2_ctrl_ptr() - Helper function to return a v4l2_ctrl_ptr from a + * void pointer + * @ptr: The void pointer + */ +static inline union v4l2_ctrl_ptr v4l2_ctrl_ptr_from_void(void *ptr) +{ + BUILD_BUG_ON(sizeof(union v4l2_ctrl_ptr) != sizeof(void *)); + return (union v4l2_ctrl_ptr) ptr; +} + /** * struct v4l2_ctrl_ops - The control operations that the driver has to provide. *
This helper function simplifies the code by not needing a union v4l2_ctrl_ptr and an assignment every time we need to use a ctrl_ptr. Suggested-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Ricardo Ribalda Delgado <ribalda@kernel.org> --- include/media/v4l2-ctrls.h | 11 +++++++++++ 1 file changed, 11 insertions(+)