diff options
| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2022-03-14 09:34:48 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-23 09:01:35 +0100 |
| commit | c7a9b80d0ea4df98b197c6d12c63b386fa75c0ec (patch) | |
| tree | e217137d7ffc8030e6acc600bd4f5db1f56d3a55 | |
| parent | b1e27cda1e3c12b705875bb7e247a97168580e33 (diff) | |
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 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; |