From 54f38fcae536ea202ce7d6a359521492fba30c1f Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 4 Mar 2020 10:21:39 +0100 Subject: media: docs: move uAPI book to userspace-api/media Since 2017, there is an space reserved for userspace API, created by changeset 1d596dee3862 ("docs: Create a user-space API guide"). As the media subsystem was one of the first subsystems to use Sphinx, until this patch, we were keeping things on a separate place. Let's just use the new location, as having all uAPI altogether will likely make things easier for developers. Signed-off-by: Mauro Carvalho Chehab --- .../userspace-api/media/v4l/func-close.rst | 56 ++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/userspace-api/media/v4l/func-close.rst (limited to 'Documentation/userspace-api/media/v4l/func-close.rst') diff --git a/Documentation/userspace-api/media/v4l/func-close.rst b/Documentation/userspace-api/media/v4l/func-close.rst new file mode 100644 index 000000000000..37a64dae56b0 --- /dev/null +++ b/Documentation/userspace-api/media/v4l/func-close.rst @@ -0,0 +1,56 @@ +.. Permission is granted to copy, distribute and/or modify this +.. document under the terms of the GNU Free Documentation License, +.. Version 1.1 or any later version published by the Free Software +.. Foundation, with no Invariant Sections, no Front-Cover Texts +.. and no Back-Cover Texts. A copy of the license is included at +.. Documentation/userspace-api/media/fdl-appendix.rst. +.. +.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections + +.. _func-close: + +************ +V4L2 close() +************ + +Name +==== + +v4l2-close - Close a V4L2 device + + +Synopsis +======== + +.. code-block:: c + + #include + + +.. c:function:: int close( int fd ) + :name: v4l2-close + +Arguments +========= + +``fd`` + File descriptor returned by :ref:`open() `. + + +Description +=========== + +Closes the device. Any I/O in progress is terminated and resources +associated with the file descriptor are freed. However data format +parameters, current input or output, control values or other properties +remain unchanged. + + +Return Value +============ + +The function returns 0 on success, -1 on failure and the ``errno`` is +set appropriately. Possible error codes: + +EBADF + ``fd`` is not a valid open file descriptor. -- cgit v1.2.3