From: Hans Verkuil <hans.verk...@cisco.com>
If a transmit is issued and before cec_transmit_done() is called the HDMI cable
is unplugged, then it is possible that adap->transmitting == NULL.
So drop the WARN_ON, explain why it can happen and just ignore the tranmit.
Signed-off-by: Hans Verkuil <hans.verkuil at cisco.com>
---
drivers/staging/media/cec/cec.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/media/cec/cec.c b/drivers/staging/media/cec/cec.c
index 3c5f084..9a62aa2 100644
--- a/drivers/staging/media/cec/cec.c
+++ b/drivers/staging/media/cec/cec.c
@@ -485,9 +485,13 @@ void cec_transmit_done(struct cec_adapter *adap, u8
status, u8 arb_lost_cnt,
dprintk(2, "cec_transmit_done %02x\n", status);
mutex_lock(&adap->lock);
data = adap->transmitting;
- if (WARN_ON(data == NULL)) {
- /* This is weird and should not happen. Ignore this transmit */
- dprintk(0, "cec_transmit_done without an ongoing transmit!\n");
+ if (data == NULL) {
+ /*
+ * This can happen if a transmit was issued and the cable is
+ * unplugged while the transmit is ongoing. Ignore this
+ * transmit in that case.
+ */
+ dprintk(1, "cec_transmit_done without an ongoing transmit!\n");
goto unlock;
}
--
2.8.1
