| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 49/57] atm: eni: Add check for dma_map_single | Date | Mon, 21 Mar 2022 14:52:30 +0100 |
| |
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 1409d48affb7..f256aeeac1b3 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; -- 2.34.1
|