[PATCH v4 5/5] dmaengine: mediatek: fix zalloc-simple.cocci warnings
From: sean.wang@mediatek.com (sean.wang at mediatek.com)
Date: 2018-02-08 17:59:08
Also in:
dmaengine, linux-devicetree, linux-mediatek, lkml
Subsystem:
dma generic offload engine subsystem, mediatek dma driver, the rest · Maintainers:
Vinod Koul, Sean Wang, Linus Torvalds
From: Fengguang Wu <redacted>
Use zeroing allocator rather than allocator followed by memset with 0
Generated by: scripts/coccinelle/api/alloc/zalloc-simple.cocci
Fixes: c8e4b2e4ca21 ("dmaengine: mediatek: Add MediaTek High-Speed DMA controller for MT7622 and MT7623 SoC")
Cc: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Fengguang Wu <redacted>
Signed-off-by: Julia Lawall <redacted>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
drivers/dma/mediatek/mtk-hsdma.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/dma/mediatek/mtk-hsdma.c b/drivers/dma/mediatek/mtk-hsdma.c
index 42b5b23..d3b90fe 100644
--- a/drivers/dma/mediatek/mtk-hsdma.c
+++ b/drivers/dma/mediatek/mtk-hsdma.c@@ -325,13 +325,11 @@ static int mtk_hsdma_alloc_pchan(struct mtk_hsdma_device *hsdma, * and [MTK_DMA_SIZE ... 2 * MTK_DMA_SIZE - 1] is for RX ring. */ pc->sz_ring = 2 * MTK_DMA_SIZE * sizeof(*ring->txd); - ring->txd = dma_alloc_coherent(hsdma2dev(hsdma), - pc->sz_ring, &ring->tphys, - GFP_ATOMIC | __GFP_ZERO); + ring->txd = dma_zalloc_coherent(hsdma2dev(hsdma), pc->sz_ring, + &ring->tphys, GFP_ATOMIC); if (!ring->txd) return -ENOMEM; - memset(ring->txd, 0, pc->sz_ring); ring->rxd = &ring->txd[MTK_DMA_SIZE]; ring->rphys = ring->tphys + MTK_DMA_SIZE * sizeof(*ring->txd); ring->cur_tptr = 0;
--
2.7.4