Messages in this thread Patch in this message | | | From | zhong jiang <> | Subject | [PATCH] drivers/staging/mt7621-eth: Use dma_zalloc_coherent to replace dma_alloc_coherent+memset | Date | Wed, 1 Aug 2018 22:10:15 +0800 |
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we prefer to use dma_zalloc_coherent rather than dam_alloc_coherent+memset
Signed-off-by: zhong jiang <zhongjiang@huawei.com> --- drivers/staging/mt7621-eth/mtk_eth_soc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/staging/mt7621-eth/mtk_eth_soc.c b/drivers/staging/mt7621-eth/mtk_eth_soc.c index f9b593ca..7135075 100644 --- a/drivers/staging/mt7621-eth/mtk_eth_soc.c +++ b/drivers/staging/mt7621-eth/mtk_eth_soc.c @@ -1396,14 +1396,13 @@ static int mtk_qdma_tx_alloc_tx(struct mtk_eth *eth) if (!ring->tx_buf) goto no_tx_mem; - ring->tx_dma = dma_alloc_coherent(eth->dev, + ring->tx_dma = dma_zalloc_coherent(eth->dev, ring->tx_ring_size * sz, &ring->tx_phys, GFP_ATOMIC | __GFP_ZERO); if (!ring->tx_dma) goto no_tx_mem; - memset(ring->tx_dma, 0, ring->tx_ring_size * sz); for (i = 0; i < ring->tx_ring_size; i++) { int next = (i + 1) % ring->tx_ring_size; u32 next_ptr = ring->tx_phys + next * sz; -- 1.7.12.4
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