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Subject: media: cec-pin: fix broken tx_ignore_nack_until_eom error injection
Author: Hans Verkuil <hverkuil@xxxxxxxxx>
Date: Wed Nov 14 03:37:53 2018 -0500
If the tx_ignore_nack_until_eom error injection was activated,
then tx_nacked was never set instead of setting it when the last
byte of the message was transmitted.
As a result the transmit was marked as OK, when it should have
been NACKed.
Modify the condition so that it always sets tx_nacked when the
last byte of the message was transmitted.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # for v4.17 and up
Signed-off-by: Hans Verkuil <hansverk@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
drivers/media/cec/cec-pin.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/drivers/media/cec/cec-pin.c b/drivers/media/cec/cec-pin.c
index 635db8e70ead..8f987bc0dd88 100644
--- a/drivers/media/cec/cec-pin.c
+++ b/drivers/media/cec/cec-pin.c
@@ -601,8 +601,9 @@ static void cec_pin_tx_states(struct cec_pin *pin, ktime_t ts)
break;
/* Was the message ACKed? */
ack = cec_msg_is_broadcast(&pin->tx_msg) ? v : !v;
- if (!ack && !pin->tx_ignore_nack_until_eom &&
- pin->tx_bit / 10 < pin->tx_msg.len && !pin->tx_post_eom) {
+ if (!ack && (!pin->tx_ignore_nack_until_eom ||
+ pin->tx_bit / 10 == pin->tx_msg.len - 1) &&
+ !pin->tx_post_eom) {
/*
* Note: the CEC spec is ambiguous regarding
* what action to take when a NACK appears
