tegrakernel/kernel/kernel-4.9/Documentation/media/uapi/dvb/frontend_f_close.rst

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2022-02-16 09:13:02 -06:00
.. -*- coding: utf-8; mode: rst -*-
.. _frontend_f_close:
********************
DVB frontend close()
********************
Name
====
fe-close - Close a frontend device
Synopsis
========
.. code-block:: c
#include <unistd.h>
.. c:function:: int close( int fd )
:name: dvb-fe-close
Arguments
=========
``fd``
File descriptor returned by :c:func:`open() <dvb-fe-open>`.
Description
===========
This system call closes a previously opened front-end device. After
closing a front-end device, its corresponding hardware might be powered
down automatically.
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.