1.. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
2.. c:namespace:: MC.request
3
4.. _request-func-close:
5
6***************
7request close()
8***************
9
10Name
11====
12
13request-close - Close a request file descriptor
14
15Synopsis
16========
17
18.. code-block:: c
19
20    #include <unistd.h>
21
22.. c:function:: int close( int fd )
23
24Arguments
25=========
26
27``fd``
28    File descriptor returned by :ref:`MEDIA_IOC_REQUEST_ALLOC`.
29
30Description
31===========
32
33Closes the request file descriptor. Resources associated with the request
34are freed once all file descriptors associated with the request are closed
35and the driver has completed the request.
36See :ref:`here <media-request-life-time>` for more information.
37
38Return Value
39============
40
41:c:func:`close()` returns 0 on success. On error, -1 is
42returned, and ``errno`` is set appropriately. Possible error codes are:
43
44EBADF
45    ``fd`` is not a valid open file descriptor.
46