Commit 3202d538 authored Mar 14, 2022 by Jiasheng Jiang Committed by Greg Kroah-Hartman Mar 23, 2022

atm: eni: Add check for dma_map_single



[ 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: 1da177e4 ("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>

parent a33dd1e6

drivers/atm/eni.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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;