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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2018-05-15 03:21:01 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-05-25 15:34:50 -0400 |
| commit | 6aecad62670bb728d9616c672114d1627f877f33 (patch) | |
| tree | c561f8dabff479c0bb53d10be1624fde18a61708 /Documentation/media/kapi | |
| parent | df2b23861878f0128083f0d328ca2cfc6e721120 (diff) | |
| download | lwn-6aecad62670bb728d9616c672114d1627f877f33.tar.gz lwn-6aecad62670bb728d9616c672114d1627f877f33.zip | |
media: cec: improve cec status documentation
Clarify the description of status bits, particularly w.r.t. ERROR and NACK.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'Documentation/media/kapi')
| -rw-r--r-- | Documentation/media/kapi/cec-core.rst | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/media/kapi/cec-core.rst b/Documentation/media/kapi/cec-core.rst index a9f53f069a2d..1d989c544370 100644 --- a/Documentation/media/kapi/cec-core.rst +++ b/Documentation/media/kapi/cec-core.rst @@ -246,7 +246,10 @@ CEC_TX_STATUS_LOW_DRIVE: CEC_TX_STATUS_ERROR: some unspecified error occurred: this can be one of ARB_LOST or LOW_DRIVE if the hardware cannot differentiate or something - else entirely. + else entirely. Some hardware only supports OK and FAIL as the + result of a transmit, i.e. there is no way to differentiate + between the different possible errors. In that case map FAIL + to CEC_TX_STATUS_NACK and not to CEC_TX_STATUS_ERROR. CEC_TX_STATUS_MAX_RETRIES: could not transmit the message after trying multiple times. |