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brcm80211: brcmu_pkt_buf_free_skb() should handle NULL

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This is potentially called with NULL pointers, for example, look at
brcmf_c_prec_enq().  Since it's a free() function, probably people
expect it to handle NULL pointers.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Dan Carpenter 2012-05-15 12:00:27 +03:00 committed by John W. Linville
parent 9be0292337
commit 1dacd1980d
1 changed files with 2 additions and 0 deletions
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2
drivers/net/wireless/brcm80211/brcmutil/utils.c
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@ -43,6 +43,8 @@ EXPORT_SYMBOL(brcmu_pkt_buf_get_skb);
/* Free the driver packet. Free the tag if present */
void brcmu_pkt_buf_free_skb(struct sk_buff *skb)
{
if (!skb)
return;
WARN_ON(skb->next);
if (skb->destructor)
/* cannot kfree_skb() on hard IRQ (net/core/skbuff.c) if