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-rw-r--r--drivers/net/caif/caif_serial.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c
index 38c0186..09257ca 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);
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