linux_dsm_epyc7002/Documentation/userspace-api/media/dvb/fe-diseqc-recv-slave-reply.rst
Mauro Carvalho Chehab 54f38fcae5 media: docs: move uAPI book to userspace-api/media
Since 2017, there is an space reserved for userspace API,
created by changeset 1d596dee38 ("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 <mchehab+huawei@kernel.org>
2020-04-14 10:31:49 +02:00

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.. 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
.. _FE_DISEQC_RECV_SLAVE_REPLY:
********************************
ioctl FE_DISEQC_RECV_SLAVE_REPLY
********************************
Name
====
FE_DISEQC_RECV_SLAVE_REPLY - Receives reply from a DiSEqC 2.0 command
Synopsis
========
.. c:function:: int ioctl( int fd, FE_DISEQC_RECV_SLAVE_REPLY, struct dvb_diseqc_slave_reply *argp )
:name: FE_DISEQC_RECV_SLAVE_REPLY
Arguments
=========
``fd``
File descriptor returned by :ref:`open() <frontend_f_open>`.
``argp``
pointer to struct :c:type:`dvb_diseqc_slave_reply`.
Description
===========
Receives reply from a DiSEqC 2.0 command.
The received message is stored at the buffer pointed by ``argp``.
Return Value
============
On success 0 is returned.
On error -1 is returned, and the ``errno`` variable is set
appropriately.
Generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.