diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2018-10-04 03:28:21 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-11-13 11:08:53 -0800 |
| commit | 94ec4487af9f08d10270bd2ad5d6802a2a42d74f (patch) | |
| tree | 9a77b7286c758958b268e955435a99181002a036 /include/uapi/linux/module.h | |
| parent | 587960d865b2ccaabc77fda31c77874a245590e8 (diff) | |
media: cec: add new tx/rx status bits to detect aborts/timeouts
commit 7ec2b3b941a666a942859684281b5f6460a0c234 upstream.
If the HDMI cable is disconnected or the CEC adapter is manually
unconfigured, then all pending transmits and wait-for-replies are
aborted. Signal this with new status bits (CEC_RX/TX_STATUS_ABORTED).
If due to (usually) a driver bug a transmit never ends (i.e. the
transmit_done was never called by the driver), then when this times
out the message is marked with CEC_TX_STATUS_TIMEOUT.
This should not happen and is an indication of a driver bug.
Without a separate status bit for this it was impossible to detect
this from userspace.
The 'transmit timed out' kernel message is now a warning, so this
should be more prominent in the kernel log as well.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: <stable@vger.kernel.org> # for v4.18 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/module.h')
0 files changed, 0 insertions, 0 deletions