Make the code a bit more robust by checking if the adapter has been unregistered at the start of cec_transmit_msg_fh() and cec_received_msg_ts(). If it is unregistered, then just return. Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx> --- drivers/media/cec/core/cec-adap.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/media/cec/core/cec-adap.c b/drivers/media/cec/core/cec-adap.c index 3153c401cb65..d5d5d28d0b36 100644 --- a/drivers/media/cec/core/cec-adap.c +++ b/drivers/media/cec/core/cec-adap.c @@ -751,6 +751,9 @@ int cec_transmit_msg_fh(struct cec_adapter *adap, struct cec_msg *msg, struct cec_data *data; bool is_raw = msg_is_raw(msg); + if (adap->devnode.unregistered) + return -ENODEV; + msg->rx_ts = 0; msg->tx_ts = 0; msg->rx_status = 0; @@ -1049,6 +1052,9 @@ void cec_received_msg_ts(struct cec_adapter *adap, if (WARN_ON(!msg->len || msg->len > CEC_MAX_MSG_SIZE)) return; + if (adap->devnode.unregistered) + return; + /* * Some CEC adapters will receive the messages that they transmitted. * This test filters out those messages by checking if we are the -- 2.27.0
