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net: hns3: fix a bug when alloc new buffer

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[ Upstream commit b9077428ec ]

When alloce new buffer to HW, should unmap the old buffer first.
This old code map the old buffer but not unmap the old buffer,
this patch fixes it.

Fixes: 76ad4f0 (net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC)

Signed-off-by: Lipeng <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lipeng
2017-10-23 19:51:01 +08:00
committed by Greg Kroah-Hartman
parent 122e18d27d
commit 669ff2a9aa
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c
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@@ -1586,7 +1586,7 @@ out_buffer_fail:
static void hns3_replace_buffer(struct hns3_enet_ring *ring, int i,
struct hns3_desc_cb *res_cb)
{
hns3_map_buffer(ring, &ring->desc_cb[i]);
hns3_unmap_buffer(ring, &ring->desc_cb[i]);
ring->desc_cb[i] = *res_cb;
ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);
}