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Diffstat (limited to 'Documentation/media/uapi/v4l/vidioc-qbuf.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/vidioc-qbuf.rst | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/media/uapi/v4l/vidioc-qbuf.rst b/Documentation/media/uapi/v4l/vidioc-qbuf.rst index e619fc80a323..753b3b5946b1 100644 --- a/Documentation/media/uapi/v4l/vidioc-qbuf.rst +++ b/Documentation/media/uapi/v4l/vidioc-qbuf.rst @@ -111,7 +111,10 @@ then ``EINVAL`` will be returned. .. caution:: It is not allowed to mix queuing requests with queuing buffers directly. ``EBUSY`` will be returned if the first buffer was queued directly and - then the application tries to queue a request, or vice versa. + then the application tries to queue a request, or vice versa. After + closing the file descriptor, calling + :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` or calling :ref:`VIDIOC_REQBUFS` + the check for this will be reset. For :ref:`memory-to-memory devices <codec>` you can specify the ``request_fd`` only for output buffers, not for capture buffers. Attempting |