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>

1 files changed, 2 insertions, 1 deletions

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.