linux-kernel - [PATCH next] sh: remove call to memset after dma_alloc

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Message-ID: <20200102015430.140729-1-chenzhou10@huawei.com>
Date:   Thu, 2 Jan 2020 09:54:30 +0800
From:   Chen Zhou <chenzhou10@...wei.com>
To:     <ysato@...rs.sourceforge.jp>, <dalias@...c.org>
CC:     <linux-sh@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <chenzhou10@...wei.com>
Subject: [PATCH next] sh: remove call to memset after dma_alloc_coherent

Function dma_alloc_coherent use in buf already zeroes out memory,
so memset is not needed.

Signed-off-by: Chen Zhou <chenzhou10@...wei.com>
---
 arch/sh/mm/consistent.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index 3169a34..0de206c 100644
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -57,8 +57,6 @@ int __init platform_resource_setup_memory(struct platform_device *pdev,
 		return -ENOMEM;
 	}
 
-	memset(buf, 0, memsize);
-
 	r->flags = IORESOURCE_MEM;
 	r->start = dma_handle;
 	r->end = r->start + memsize - 1;
-- 
2.7.4