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 09:12:07 +0100 |
| commit | 97ccef56e53c98c20746642a06ae1d27853bdaec (patch) | |
| tree | a405a30e3fb3b26269e73219d649540cf9b19b98 /drivers/atm | |
| parent | 268dcf1f7b3193bc446ec3d14e08a240e9561e4d (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>
Diffstat (limited to 'drivers/atm')
| -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 de52428b8833..4816db0553ef 100644 --- a/drivers/atm/eni.c +++ b/drivers/atm/eni.c @@ -1116,6 +1116,8 @@ 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; |