net: ethernet: mtk-star-emac: fix wrong unmap in RX handling

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mtk_star_dma_unmap_rx() should unmap the dma_addr of old skb rather than
that of new skb.
Assign new_dma_addr to desc_data.dma_addr after all handling of old skb
ends to avoid unexpected receive side error.

Fixes: f96e9641e9 ("net: ethernet: mtk-star-emac: fix error path in RX handling")
Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Biao Huang 2021-03-02 11:33:23 +08:00 • committed by David S. Miller

parent fa706dce2f

commit 95b39f07a1

1 changed files with 3 additions and 2 deletions

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drivers/net/ethernet/mediatek/mtk_star_emac.c

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