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| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2022-03-14 09:34:48 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-23 09:18:48 +0100 |
| commit | 1249433423e0c2a9aae2b8072840cce7b04ddd48 (patch) | |
| tree | 34350038de4b4e7b67fa91484ea9128959b9b287 | |
| parent | 80e4153c3e5ead5601f64fb114c90412996457fa (diff) | |
| download | linux-1249433423e0c2a9aae2b8072840cce7b04ddd48.tar.gz linux-1249433423e0c2a9aae2b8072840cce7b04ddd48.tar.bz2 linux-1249433423e0c2a9aae2b8072840cce7b04ddd48.zip | |
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: 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>
| -rw-r--r-- | drivers/atm/eni.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c index 422753d52244..a31ffe16e626 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_next; ENI_PRV_PADDR(skb) = paddr; /* prepare DMA queue entries */ j = 0; |