kernel/linux.git/include/media/media-request.h, branch v7.0-rc1

media: mc: add debugfs node to keep track of requests

2026-01-05T14:56:31+00:00

Keep track of the number of requests and request objects of a media device. Helps to verify that all request-related memory is freed. Signed-off-by: Hans Verkuil Signed-off-by: Nicolas Dufresne

media: mc: add manual request completion

2026-01-05T14:56:31+00:00

By default when the last request object is completed, the whole request completes as well. But sometimes you want to delay this completion to an arbitrary point in time so add a manual complete mode for this. In req_queue the driver marks the request for manual completion by calling media_request_mark_manual_completion, and when the driver wants to manually complete the request it calls media_request_manual_complete(). Signed-off-by: Hans Verkuil Signed-off-by: Nicolas Dufresne

media: update Hans Verkuil's email address

2025-09-09T13:58:44+00:00

Replace hansverk@cisco.com by hverkuil@kernel.org. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: replace obsolete hans.verkuil@cisco.com alias

2024-11-08T12:38:09+00:00

The old hans.verkuil@cisco.com email address was discontinued years ago. Replace it with the correct hansverk@cisco.com email. Signed-off-by: Hans Verkuil

media: media requests: return EBADR instead of EACCES

2019-03-25T17:26:10+00:00

If requests are used when they shouldn't, or not used when they should, then return EBADR (Invalid request descriptor) instead of EACCES. The reason for this change is that EACCES has more to do with permissions (not being the owner of the resource), but in this case the request file descriptor is just wrong for the current mode of the device. Update the documentation accordingly. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: Use wait_queue_head_t for media_request

2018-11-20T17:53:23+00:00

The portable type for a wait queue is wait_queue_head_t. Signed-off-by: Jasmin Jessich Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: media-request: EPERM -> EACCES/EBUSY

2018-09-11T13:57:29+00:00

If requests are not supported by the driver, then return EACCES, not EPERM. If you attempt to mix queueing buffers directly and using requests, then EBUSY is returned instead of EPERM: once a specific queueing mode has been chosen the queue is 'busy' if you attempt the other mode (i.e. direct queueing vs via a request). Signed-off-by: Hans Verkuil Reviewed-by: Tomasz Figa Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: media-request: add media_request_(un)lock_for_access

2018-09-11T13:53:31+00:00

Add helper functions to prevent a completed request from being re-inited while it is being accessed. Signed-off-by: Hans Verkuil Reviewed-by: Tomasz Figa Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: media-request: return -EINVAL for invalid request_fds

2018-09-11T13:45:58+00:00

Instead of returning -ENOENT when a request_fd was not found (VIDIOC_QBUF and VIDIOC_G/S/TRY_EXT_CTRLS), we now return -EINVAL. This is in line with what we do when invalid dmabuf fds are passed to e.g. VIDIOC_QBUF. Also document that EINVAL is returned for invalid m.fd values, we never documented that. Signed-off-by: Hans Verkuil Reviewed-by: Tomasz Figa Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: media-request: add media_request_object_find

2018-08-31T15:07:08+00:00

Add media_request_object_find to find a request object inside a request based on ops and priv values. Objects of the same type (vb2 buffer, control handler) will have the same ops value. And objects that refer to the same 'parent' object (e.g. the v4l2_ctrl_handler that has the current driver state) will have the same priv value. The caller has to call media_request_object_put() for the returned object since this function increments the refcount. Signed-off-by: Hans Verkuil Acked-by: Sakari Ailus Reviewed-by: Mauro Carvalho Chehab Signed-off-by: Mauro Carvalho Chehab