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