diff options
Diffstat (limited to 'drivers/net/caif/caif_serial.c')
| -rw-r--r-- | drivers/net/caif/caif_serial.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c index 38c0186cfbc..09257ca8f56 100644 --- a/drivers/net/caif/caif_serial.c +++ b/drivers/net/caif/caif_serial.c @@ -197,7 +197,8 @@ static void ldisc_receive(struct tty_struct *tty, const u8 *data, /* Get a suitable caif packet and copy in data. */ skb = netdev_alloc_skb(ser->dev, count+1); - BUG_ON(skb == NULL); + if (skb == NULL) + return; p = skb_put(skb, count); memcpy(p, data, count); @@ -315,6 +316,8 @@ static int ldisc_open(struct tty_struct *tty) /* No write no play */ if (tty->ops->write == NULL) return -EOPNOTSUPP; + if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_TTY_CONFIG)) + return -EPERM; sprintf(name, "cf%s", tty->name); dev = alloc_netdev(sizeof(*ser), name, caifdev_setup); |