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media: v4l2_ctrl: Add const pointer to ctrl_ptr 

This pointer is used to point to data that is constant. Thanks to this
we can avoid a lot of casting and we make more clear when the data is
constant or variable.

Suggested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Ricardo Ribalda Delgado <ribalda@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
alistair/sunxi64-5.5-dsi
Ricardo Ribalda Delgado 2019-11-04 14:09:19 +01:00 committed by Mauro Carvalho Chehab
parent 3b98a21a32
commit f1bd5eae7d
1 changed files with 2 additions and 0 deletions
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2
include/media/v4l2-ctrls.h
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@ -56,6 +56,7 @@ struct poll_table_struct;
* @p_hevc_slice_params: Pointer to an HEVC slice parameters structure.
* @p_area: Pointer to an area.
* @p: Pointer to a compound value.
* @p_const: Pointer to a constant compound value.
*/
union v4l2_ctrl_ptr {
s32 *p_s32;
@ -78,6 +79,7 @@ union v4l2_ctrl_ptr {
struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
struct v4l2_area *p_area;
void *p;
const void *p_const;
};
/**