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@xxxxxxxxx>
---
diff --git a/drivers/media/cec/core/cec-adap.c b/drivers/media/cec/core/cec-adap.c
index 8bf91b5a7d0e..41a79293ee02 100644
--- a/drivers/media/cec/core/cec-adap.c
+++ b/drivers/media/cec/core/cec-adap.c
@@ -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
