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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>
This commit is contained in:
Andrew Murray 2010-08-04 16:38:35 +09:00 committed by Paul Mundt
parent 82b20d8bae
commit 57682827b9
1 changed files with 2 additions and 1 deletions
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3
arch/sh/mm/consistent.c
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@ -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.