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media: cec-adap.c: log when claiming LA fails unexpectedly 

If there is a hardware problem such as someone pulling the CEC line low
continuously, then the POLL message will fail with an error other than
OK, NACK, ABORTED or TIMEOUT. Log the tx_status value in that case to
help debug this.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Hans Verkuil 2022-05-13 08:54:43 +01:00 committed by Mauro Carvalho Chehab
parent b9629c550f
commit 691c3db0dc
1 changed files with 4 additions and 1 deletions
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5
drivers/media/cec/core/cec-adap.c
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@ -1309,8 +1309,11 @@ static int cec_config_log_addr(struct cec_adapter *adap,
* we assume that something is really weird and that it is not a
* good idea to try and claim this logical address.
*/
if (i == max_retries)
if (i == max_retries) {
dprintk(0, "polling for LA %u failed with tx_status=0x%04x\n",
log_addr, msg.tx_status);
return 0;
}
/*
* Message not acknowledged, so this logical