diff options
| author |   Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2019-04-23 08:43:30 -0400 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-05-23 05:31:35 -0400 |
| commit | e76cbec85eac714a93a7945c9c41dcd8819b31c5 (patch) | |
| tree | 82ef3b217e246762086b07234beba1f5eedc4807 /drivers/media/cec | |
| parent | media: cec: cec_transmit_msg_fh: do sanity checks first (diff) | |
| download | wireguard-linux-e76cbec85eac714a93a7945c9c41dcd8819b31c5.tar.xz wireguard-linux-e76cbec85eac714a93a7945c9c41dcd8819b31c5.zip | |
media: cec: move check from cec_transmit to cec_transmit_msg_fh
This ensures all the cec_msg checks are done in the same place.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/cec')
| -rw-r--r-- | drivers/media/cec/cec-adap.c | 5 | ||||
| -rw-r--r-- | drivers/media/cec/cec-api.c | 8 |
2 files changed, 5 insertions, 8 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; diff --git a/drivers/media/cec/cec-api.c b/drivers/media/cec/cec-api.c index 156a0d76ab2a..12d676484472 100644 --- a/drivers/media/cec/cec-api.c +++ b/drivers/media/cec/cec-api.c @@ -198,19 +198,11 @@ static long cec_transmit(struct cec_adapter *adap, struct cec_fh *fh, if (copy_from_user(&msg, parg, sizeof(msg))) return -EFAULT; - /* 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; - mutex_lock(&adap->lock); if (adap->log_addrs.num_log_addrs == 0) err = -EPERM; else if (adap->is_configuring) err = -ENONET; - else if (!adap->is_configured && - (adap->needs_hpd || msg.msg[0] != 0xf0)) - err = -ENONET; else if (cec_is_busy(adap, fh)) err = -EBUSY; else |