From: Andrew Murray <amurray@mpc-data.co.uk>
Date: Wed, 4 Aug 2010 07:38:35 +0000 (+0900)
Subject: sh: Use __GFP_ZERO for dma_generic_alloc_coherent().
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=57682827b9a5edb52e33af0be9082b51bffcd5c7;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

sh: Use __GFP_ZERO for dma_generic_alloc_coherent().

This follows the x86 change off of memset() and on to an unconditional
__GFP_ZERO for wrapping in to optimized page clearing by way of
clear_highpage().

Signed-off-by: Andrew Murray <amurray@mpc-data.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---

diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index c86a08540258..038793286990 100644
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -38,11 +38,12 @@ void *dma_generic_alloc_coherent(struct device *dev, size_t size,
 	void *ret, *ret_nocache;
 	int order = get_order(size);
 
+	gfp |= __GFP_ZERO;
+
 	ret = (void *)__get_free_pages(gfp, order);
 	if (!ret)
 		return NULL;
 
-	memset(ret, 0, size);
 	/*
 	 * Pages from the page allocator may have data present in
 	 * cache. So flush the cache before using uncached memory.