From: Hans Verkuil <hans.verkuil@xxxxxxxxx> The filehandle was set to NULL when in non-blocking mode or when no reply is needed. This is wrong: the filehandle is needed in non-blocking mode to ensure that the result of the transmit can be obtained through CEC_RECEIVE. And the 'reply' check was also incorrect since it should have checked the timeout field (the reply can be 0). In any case, when in blocking mode there is no need to set the fh to NULL either. Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx> --- drivers/staging/media/cec/cec-api.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/staging/media/cec/cec-api.c b/drivers/staging/media/cec/cec-api.c index 879f7d9..559f650 100644 --- a/drivers/staging/media/cec/cec-api.c +++ b/drivers/staging/media/cec/cec-api.c @@ -189,15 +189,12 @@ static long cec_transmit(struct cec_adapter *adap, struct cec_fh *fh, if (copy_from_user(&msg, parg, sizeof(msg))) return -EFAULT; mutex_lock(&adap->lock); - if (!adap->is_configured) { + if (!adap->is_configured) err = -ENONET; - } else if (cec_is_busy(adap, fh)) { + else if (cec_is_busy(adap, fh)) err = -EBUSY; - } else { - if (!block || !msg.reply) - fh = NULL; + else err = cec_transmit_msg_fh(adap, &msg, fh, block); - } mutex_unlock(&adap->lock); if (err) return err; -- 2.8.1 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html