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Subject: media: cec-pin: fix broken tx_ignore_nack_until_eom error injection Author: Hans Verkuil hverkuil@xs4all.nl 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@cisco.com Cc: stable@vger.kernel.org # for v4.17 and up Signed-off-by: Hans Verkuil hansverk@cisco.com Signed-off-by: Mauro Carvalho Chehab mchehab+samsung@kernel.org

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