Commit 2d307380 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files

media: cec-adap.c: add 'unregistered' checks 



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: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 5254187c

drivers/media/cec/core/cec-adap.c

+6 −0
Original line number Diff line number Diff line
@@ -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