From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Some hardware does more than one attempt. So when it calls
cec_transmit_done when an error occurred it will e.g. use an error count
of 2 instead of 1.
The framework always assumed a single attempt, but now it is smarter
and will sum the counters to detect how many attempts were made.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/cec/cec-adap.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/media/cec/cec-adap.c b/drivers/media/cec/cec-adap.c
index bf45977b2823..e9284dbdc880 100644
--- a/drivers/media/cec/cec-adap.c
+++ b/drivers/media/cec/cec-adap.c
@@ -472,9 +472,14 @@ void cec_transmit_done(struct cec_adapter *adap, u8 status, u8 arb_lost_cnt,
{
struct cec_data *data;
struct cec_msg *msg;
+ unsigned int attempts_made = arb_lost_cnt + nack_cnt +
+ low_drive_cnt + error_cnt;
u64 ts = ktime_get_ns();
dprintk(2, "%s: status %02x\n", __func__, status);
+ if (attempts_made < 1)
+ attempts_made = 1;
+
mutex_lock(&adap->lock);
data = adap->transmitting;
if (!data) {
@@ -507,10 +512,10 @@ void cec_transmit_done(struct cec_adapter *adap, u8 status, u8 arb_lost_cnt,
* the hardware didn't signal that it retried itself (by setting
* CEC_TX_STATUS_MAX_RETRIES), then we will retry ourselves.
*/
- if (data->attempts > 1 &&
+ if (data->attempts > attempts_made &&
!(status & (CEC_TX_STATUS_MAX_RETRIES | CEC_TX_STATUS_OK))) {
/* Retry this message */
- data->attempts--;
+ data->attempts -= attempts_made;
if (msg->timeout)
dprintk(2, "retransmit: %*ph (attempts: %d, wait for 0x%02x)\n",
msg->len, msg->msg, data->attempts, msg->reply);
--
2.11.0
