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media: videodev2.h: drop V4L2_CAP_ASYNCIO

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The V4L2_CAP_ASYNCIO capability was never implemented (and in fact
it isn't clear what it was supposed to do in the first place).

Drop it from the capabilities list. Keep it in videodev2.h with the
other defines under ifndef __KERNEL__ for backwards compatibility.

This will free up a capability bit for other future uses. And having
an unused and undefined I/O method is just plain confusing.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Hans Verkuil
2022-08-18 09:51:40 +02:00
committed by Mauro Carvalho Chehab
parent 0565b91eae
commit 17611d3fb4
8 changed files with 10 additions and 20 deletions
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6
include/uapi/linux/videodev2.h
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@@ -502,7 +502,6 @@ struct v4l2_capability {
#define V4L2_CAP_META_CAPTURE 0x00800000 /* Is a metadata capture device */
#define V4L2_CAP_READWRITE 0x01000000 /* read/write systemcalls */
#define V4L2_CAP_ASYNCIO 0x02000000 /* async I/O */
#define V4L2_CAP_STREAMING 0x04000000 /* streaming I/O ioctls */
#define V4L2_CAP_META_OUTPUT 0x08000000 /* Is a metadata output device */
@@ -2683,6 +2682,11 @@ struct v4l2_create_buffers {
#ifndef __KERNEL__
#define V4L2_PIX_FMT_HM12 V4L2_PIX_FMT_NV12_16L16
#define V4L2_PIX_FMT_SUNXI_TILED_NV12 V4L2_PIX_FMT_NV12_32L32
/*
* This capability was never implemented, anyone using this cap should drop it
* from their code.
*/
#define V4L2_CAP_ASYNCIO 0x02000000
#endif
#endif /* _UAPI__LINUX_VIDEODEV2_H */