linux-kernel - [PATCH] arch: sh: Replace dma_alloc_coherent/memset with dma_zalloc

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Message-Id: <1536133126-21017-1-git-send-email-dingxiang@cmss.chinamobile.com>
Date:   Wed,  5 Sep 2018 15:38:46 +0800
From:   Ding Xiang <dingxiang@...s.chinamobile.com>
To:     ysato@...rs.sourceforge.jp, dalias@...c.org,
        linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     dingxiang@...s.chinamobile.com
Subject: [PATCH] arch: sh: Replace dma_alloc_coherent/memset with dma_zalloc_coherent

use dma_zalloc_coherent instead of dma_alloc_coherent/memset

Signed-off-by: Ding Xiang <dingxiang@...s.chinamobile.com>
---
 arch/sh/mm/consistent.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index 792f361..aa4e450 100644
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -52,14 +52,12 @@ int __init platform_resource_setup_memory(struct platform_device *pdev,
 	if (!memsize)
 		return 0;
 
-	buf = dma_alloc_coherent(&pdev->dev, memsize, &dma_handle, GFP_KERNEL);
+	buf = dma_zalloc_coherent(&pdev->dev, memsize, &dma_handle, GFP_KERNEL);
 	if (!buf) {
 		pr_warning("%s: unable to allocate memory\n", name);
 		return -ENOMEM;
 	}
 
-	memset(buf, 0, memsize);
-
 	r->flags = IORESOURCE_MEM;
 	r->start = dma_handle;
 	r->end = r->start + memsize - 1;
-- 
1.9.1