forked from Minki/linux
9a721b9b4b
There are several issues on the return value for ioctls: - Text is confusing; - Some error codes don't exist; - The non-generic error codes should come before the text that points to the generic error codes; - Tables don't contain column size hints; - Some references are not marked as such. Correct them. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
58 lines
837 B
ReStructuredText
58 lines
837 B
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
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.. _CA_SET_DESCR:
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============
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CA_SET_DESCR
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============
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Name
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----
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CA_SET_DESCR
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Synopsis
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--------
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.. c:function:: int ioctl(fd, CA_SET_DESCR, struct ca_descr *desc)
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:name: CA_SET_DESCR
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Arguments
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---------
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``fd``
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File descriptor returned by a previous call to :c:func:`open() <cec-open>`.
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``msg``
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Pointer to struct :c:type:`ca_descr`.
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.. c:type:: ca_descr
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.. code-block:: c
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struct ca_descr {
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unsigned int index;
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unsigned int parity;
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unsigned char cw[8];
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};
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Description
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-----------
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.. note:: This ioctl is undocumented. Documentation is welcome.
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Return Value
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------------
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On success 0 is returned.
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On error -1 is returned, and the ``errno`` variable is set
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appropriately.
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Generic error codes are described at the
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:ref:`Generic Error Codes <gen-errors>` chapter.
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