linux-kernel - [PATCH] arch/powerpc: Use dma_zalloc

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Date:   Mon, 5 Nov 2018 08:58:23 +0530
From:   Sabyasachi Gupta <sabyasachi.linux@...il.com>
To:     benh@...nel.crashing.org, paulus@...ba.org, mpe@...erman.id.au,
        joe@...ches.com, darren@...vens-zone.net, christophe.leroy@....fr,
        geoff@...radead.org
Cc:     jrdr.linux@...il.com, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] arch/powerpc: Use dma_zalloc_coherent

Replaced dma_alloc_coherent + memset with dma_zalloc_coherent

Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@...il.com>
---
 arch/powerpc/platforms/pasemi/dma_lib.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/powerpc/platforms/pasemi/dma_lib.c b/arch/powerpc/platforms/pasemi/dma_lib.c
index 53384eb..d18d164 100644
--- a/arch/powerpc/platforms/pasemi/dma_lib.c
+++ b/arch/powerpc/platforms/pasemi/dma_lib.c
@@ -255,15 +255,13 @@ int pasemi_dma_alloc_ring(struct pasemi_dmachan *chan, int ring_size)
 
 	chan->ring_size = ring_size;
 
-	chan->ring_virt = dma_alloc_coherent(&dma_pdev->dev,
+	chan->ring_virt = dma_zalloc_coherent(&dma_pdev->dev,
 					     ring_size * sizeof(u64),
 					     &chan->ring_dma, GFP_KERNEL);
 
 	if (!chan->ring_virt)
 		return -ENOMEM;
 
-	memset(chan->ring_virt, 0, ring_size * sizeof(u64));
-
 	return 0;
 }
 EXPORT_SYMBOL(pasemi_dma_alloc_ring);
-- 
2.7.4