sh: Zero-out coherent buffer in consistent_alloc().

Be sure to zero out the buffer, this was causing occasional problems
under heavier PCI tests.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index c81e6b6..38c82d8 100644 (file)
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -28,6 +28,7 @@ void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *handle)
        split_page(page, order);
 
        ret = page_address(page);
+       memset(ret, 0, size);
        *handle = virt_to_phys(ret);
 
        /*