From: Jiasheng Jiang jiasheng@iscas.ac.cn
[ Upstream commit 0f74b29a4f53627376cf5a5fb7b0b3fa748a0b2b ]
As the potential failure of the dma_map_single(), it should be better to check it and return error if fails.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Jiasheng Jiang jiasheng@iscas.ac.cn Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/atm/eni.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c index ffe519663687..e88fad45241f 100644 --- a/drivers/atm/eni.c +++ b/drivers/atm/eni.c @@ -1114,6 +1114,8 @@ DPRINTK("iovcnt = %d\n",skb_shinfo(skb)->nr_frags); } paddr = dma_map_single(&eni_dev->pci_dev->dev,skb->data,skb->len, DMA_TO_DEVICE); + if (dma_mapping_error(&eni_dev->pci_dev->dev, paddr)) + return enq_next; ENI_PRV_PADDR(skb) = paddr; /* prepare DMA queue entries */ j = 0;