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net: hns3: Add unlikely for dma_mapping_error check 

For dma_mapping_error is unlikely happened, this patch adds unlikely for
dma_mapping_error check.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jian Shen 2018-09-21 16:41:44 +01:00 committed by David S. Miller
parent 7a8101109d
commit 2211f4e195
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
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@ -1807,7 +1807,7 @@ static int hns3_map_buffer(struct hns3_enet_ring *ring, struct hns3_desc_cb *cb)
cb->dma = dma_map_page(ring_to_dev(ring), cb->priv, 0,
cb->length, ring_to_dma_dir(ring));
if (dma_mapping_error(ring_to_dev(ring), cb->dma))
if (unlikely(dma_mapping_error(ring_to_dev(ring), cb->dma)))
return -EIO;
return 0;