[PATCH] drivers cris: return on NULL dev_alloc_skb()

If the next descriptor array entry cannot be allocated by dev_alloc_skb(),
return immediately so it is not dereferenced later.  We cannot register the
device with a partial descriptor list.

Cc: Mikael Starvik <starvik@axis.com>
Signed-off-by: David Rientjes <rientjes@cs.washington.edu>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/cris/eth_v10.c b/drivers/net/cris/eth_v10.c
index 966b563e42bb..a03d781f6d0a 100644
--- a/drivers/net/cris/eth_v10.c
+++ b/drivers/net/cris/eth_v10.c
@@ -509,6 +509,8 @@ etrax_ethernet_init(void)
                  * does not share cacheline with any other data (to avoid cache bug)
                  */
                 RxDescList[i].skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES);
+                if (!RxDescList[i].skb)
+                        return -ENOMEM;
                 RxDescList[i].descr.ctrl   = 0;
                 RxDescList[i].descr.sw_len = MAX_MEDIA_DATA_SIZE;
                 RxDescList[i].descr.next   = virt_to_phys(&RxDescList[i + 1]);