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net: caif: replace BUG_ON with recovery code

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In caif_xmit, there is a crash if the ptr dev is NULL. However, by
returning the error to the callers, the error can be handled. The
patch fixes this issue.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Aditya Pakki 2019-12-15 11:51:30 -06:00 committed by David S. Miller
parent bbd20c939c
commit c5dea81583
1 changed files with 3 additions and 1 deletions
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4
drivers/net/caif/caif_serial.c
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@ -270,7 +270,9 @@ static int caif_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ser_device *ser;
BUG_ON(dev == NULL);
if (WARN_ON(!dev))
return -EINVAL;
ser = netdev_priv(dev);
/* Send flow off once, on high water mark */