[PATCH 8/7] cec: poll should check if there is room in the tx queue

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For POLLOUT poll only checked if the adapter was configured, not
if there was room in the transmit queue. Add that check.

Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
 drivers/staging/media/cec/cec-api.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/cec/cec-api.c b/drivers/staging/media/cec/cec-api.c
index 559f650..7be7615 100644
--- a/drivers/staging/media/cec/cec-api.c
+++ b/drivers/staging/media/cec/cec-api.c
@@ -52,7 +52,8 @@ static unsigned int cec_poll(struct file *filp,
 	if (!devnode->registered)
 		return POLLERR | POLLHUP;
 	mutex_lock(&adap->lock);
-	if (adap->is_configured)
+	if (adap->is_configured &&
+	    adap->transmit_queue_sz < CEC_MAX_MSG_TX_QUEUE_SZ)
 		res |= POLLOUT | POLLWRNORM;
 	if (fh->queued_msgs)
 		res |= POLLIN | POLLRDNORM;
-- 
2.8.1
--
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