linux/include/uapi
Hans Verkuil 94ec4487af media: cec: add new tx/rx status bits to detect aborts/timeouts
commit 7ec2b3b941 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>
2018-11-13 11:08:53 -08:00
..
asm-generic mm/hugetlb: add mmap() encodings for 32MB and 512MB page sizes 2018-10-05 16:32:04 -07:00
drm drm: add msm compressed format modifiers 2018-07-26 10:39:21 -04:00
linux media: cec: add new tx/rx status bits to detect aborts/timeouts 2018-11-13 11:08:53 -08:00
misc ocxl: Add an IOCTL so userspace knows what OCXL features are available 2018-06-03 20:40:32 +10:00
mtd ubi: expose the volume CRC check skip flag 2018-08-15 00:25:21 +02:00
rdma IB/rxe: Revise the ib_wr_opcode enum 2018-11-13 11:08:43 -08:00
scsi
sound ASoC: uapi: fix sound/skl-tplg-interface.h userspace compilation errors 2018-08-14 15:08:07 +01:00
video
xen xen/gntdev: Add initial support for dma-buf UAPI 2018-07-26 23:05:14 -04:00