[PATCH -mm 1/6] blackfin: set ARCH_KMALLOC_MINALIGN

[FUJITA Tomonori]

Architectures that handle DMA-non-coherent memory need to set
ARCH_KMALLOC_MINALIGN to make sure that kmalloc'ed buffer is DMA-safe:
the buffer doesn't share a cache with the others.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
Cc: Mike Frysinger <vapier@xxxxxxxxxx>
Cc: stable@xxxxxxxxxx
---
 arch/blackfin/include/asm/cache.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/blackfin/include/asm/cache.h b/arch/blackfin/include/asm/cache.h
index 8542bc3..93f6c63 100644
--- a/arch/blackfin/include/asm/cache.h
+++ b/arch/blackfin/include/asm/cache.h
@@ -15,6 +15,8 @@
 #define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
 #define SMP_CACHE_BYTES	L1_CACHE_BYTES
 
+#define ARCH_KMALLOC_MINALIGN	L1_CACHE_BYTES
+
 #ifdef CONFIG_SMP
 #define __cacheline_aligned
 #else
-- 
1.6.5

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