[PATCH -mm 3/6] m68k: 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: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Roman Zippel <zippel@xxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxx
---
 arch/m68k/include/asm/cache.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/m68k/include/asm/cache.h b/arch/m68k/include/asm/cache.h
index fed3fd3..ecafbe1 100644
--- a/arch/m68k/include/asm/cache.h
+++ b/arch/m68k/include/asm/cache.h
@@ -8,4 +8,6 @@
 #define        L1_CACHE_SHIFT  4
 #define        L1_CACHE_BYTES  (1<< L1_CACHE_SHIFT)
 
+#define ARCH_KMALLOC_MINALIGN	L1_CACHE_BYTES
+
 #endif
-- 
1.6.5

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