diff options
Diffstat (limited to 'drivers/media/cec/cec-adap.c')
| -rw-r--r-- | drivers/media/cec/cec-adap.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/media/cec/cec-adap.c b/drivers/media/cec/cec-adap.c index b6102510e203..5b9232b6e663 100644 --- a/drivers/media/cec/cec-adap.c +++ b/drivers/media/cec/cec-adap.c @@ -761,6 +761,11 @@ int cec_transmit_msg_fh(struct cec_adapter *adap, struct cec_msg *msg, return -EINVAL; } + /* A CDC-Only device can only send CDC messages */ + if ((adap->log_addrs.flags & CEC_LOG_ADDRS_FL_CDC_ONLY) && + (msg->len == 1 || msg->msg[1] != CEC_MSG_CDC_MESSAGE)) + return -EINVAL; + if (msg->len >= 4 && msg->msg[1] == CEC_MSG_CDC_MESSAGE) { msg->msg[2] = adap->phys_addr >> 8; msg->msg[3] = adap->phys_addr & 0xff; |