Messages in this thread Patch in this message | | | From | Jiasheng Jiang <> | Subject | [PATCH] atm: eni: Add check for dma_map_single | Date | Fri, 11 Mar 2022 15:16:56 +0800 |
| |
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> --- drivers/atm/eni.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c index 422753d52244..96c2d8f5646b 100644 --- a/drivers/atm/eni.c +++ b/drivers/atm/eni.c @@ -1112,6 +1112,8 @@ DPRINTK("iovcnt = %d\n",skb_shinfo(skb)->nr_frags); skb_data3 = skb->data[3]; 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_jam; ENI_PRV_PADDR(skb) = paddr; /* prepare DMA queue entries */ j = 0; -- 2.25.1
| |