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| author |   Hans Verkuil <hverkuil@xs4all.nl> | 2017-02-20 17:21:19 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-03-22 11:12:34 -0300 |
| commit | 491314b8d41bb680f6ddb2632c1a36dd3959d5b3 (patch) | |
| tree | 3a58b7cada36c682b8bfa155d841adfffc75d404 /Documentation/media/uapi/cec/cec-ioc-dqevent.rst | |
| parent | [media] cec: return -EPERM when no LAs are configured (diff) | |
| download | linux-dev-491314b8d41bb680f6ddb2632c1a36dd3959d5b3.tar.xz linux-dev-491314b8d41bb680f6ddb2632c1a36dd3959d5b3.zip | |
[media] cec: document the error codes
Document all the various error codes returned by the CEC ioctls.
These were never documented, instead the documentation relied on a reference
to the generic error codes, but that's not sufficient.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media/uapi/cec/cec-ioc-dqevent.rst')
| -rw-r--r-- | Documentation/media/uapi/cec/cec-ioc-dqevent.rst | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/media/uapi/cec/cec-ioc-dqevent.rst b/Documentation/media/uapi/cec/cec-ioc-dqevent.rst index 89ef6c1a2e42..4d3570c2e0b3 100644 --- a/Documentation/media/uapi/cec/cec-ioc-dqevent.rst +++ b/Documentation/media/uapi/cec/cec-ioc-dqevent.rst @@ -174,3 +174,14 @@ Return Value On success 0 is returned, on error -1 and the ``errno`` variable is set appropriately. The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. + +The :ref:`ioctl CEC_DQEVENT <CEC_DQEVENT>` can return the following +error codes: + +EAGAIN + This is returned when the filehandle is in non-blocking mode and there + are no pending events. + +ERESTARTSYS + An interrupt (e.g. Ctrl-C) arrived while in blocking mode waiting for + events to arrive. |