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[PATCH] net s2io: return on NULL dev_alloc_skb()

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Checks for NULL dev_alloc_skb() and returns on true to avoid subsequent
dereference.

Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Christoph Hellwig <hch@infrared.org>
Signed-off-by: David Rientjes <rientjes@cs.washington.edu>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
David Rientjes 2006-10-30 14:19:25 -08:00 committed by Jeff Garzik
parent 1e1675ccf7
commit 2ceaac7554
1 changed files with 10 additions and 1 deletions
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11
drivers/net/s2io.c
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@ -5985,6 +5985,11 @@ static int set_rxd_buffer_pointer(nic_t *sp, RxD_t *rxdp, buffAdd_t *ba,
((RxD3_t*)rxdp)->Buffer1_ptr = *temp1;
} else {
*skb = dev_alloc_skb(size);
if (!(*skb)) {
DBG_PRINT(ERR_DBG, "%s: dev_alloc_skb failed\n",
dev->name);
return -ENOMEM;
}
((RxD3_t*)rxdp)->Buffer2_ptr = *temp2 =
pci_map_single(sp->pdev, (*skb)->data,
dev->mtu + 4,
@ -6007,7 +6012,11 @@ static int set_rxd_buffer_pointer(nic_t *sp, RxD_t *rxdp, buffAdd_t *ba,
((RxD3_t*)rxdp)->Buffer2_ptr = *temp2;
} else {
*skb = dev_alloc_skb(size);
if (!(*skb)) {
DBG_PRINT(ERR_DBG, "%s: dev_alloc_skb failed\n",
dev->name);
return -ENOMEM;
}
((RxD3_t*)rxdp)->Buffer0_ptr = *temp0 =
pci_map_single(sp->pdev, ba->ba_0, BUF0_LEN,
PCI_DMA_FROMDEVICE);