net: mediatek: use dma_zalloc_coherent instead of allocator/memset

Use dma_zalloc_coherent instead of dma_alloc_coherent
followed by memset 0.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index d8ebf0a..c30aea2 100644 (file)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1221,14 +1221,11 @@ static int mtk_tx_alloc(struct mtk_eth *eth)
        if (!ring->buf)
                goto no_tx_mem;
 
-       ring->dma = dma_alloc_coherent(eth->dev,
-                                         MTK_DMA_SIZE * sz,
-                                         &ring->phys,
-                                         GFP_ATOMIC | __GFP_ZERO);
+       ring->dma = dma_zalloc_coherent(eth->dev, MTK_DMA_SIZE * sz,
+                                       &ring->phys, GFP_ATOMIC);
        if (!ring->dma)
                goto no_tx_mem;
 
-       memset(ring->dma, 0, MTK_DMA_SIZE * sz);
        for (i = 0; i < MTK_DMA_SIZE; i++) {
                int next = (i + 1) % MTK_DMA_SIZE;
                u32 next_ptr = ring->phys + next * sz;