diff options
Diffstat (limited to 'drivers/media/usb/dvb-usb/af9005.c')
| -rw-r--r-- | drivers/media/usb/dvb-usb/af9005.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/media/usb/dvb-usb/af9005.c b/drivers/media/usb/dvb-usb/af9005.c index 89b4b5d84cdf..827f9db16aa1 100644 --- a/drivers/media/usb/dvb-usb/af9005.c +++ b/drivers/media/usb/dvb-usb/af9005.c @@ -422,6 +422,10 @@ static int af9005_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], if (ret == 0) ret = 2; } else { + if (msg[0].len < 2) { + ret = -EOPNOTSUPP; + goto unlock; + } /* write one or more registers */ reg = msg[0].buf[0]; addr = msg[0].addr; @@ -431,6 +435,7 @@ static int af9005_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], ret = 1; } +unlock: mutex_unlock(&d->i2c_mutex); return ret; } |