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From: Greg KH on 1 Jul 2010 17:50
2.6.34-stable review patch. If anyone has any objections, please let me know.

------------------

From: FUJITA Tomonori <fujita.tomonori(a)lab.ntt.co.jp>

commit 76b99699a2bbf9efdb578f9a38a202af2ecb354b upstream.

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(a)lab.ntt.co.jp>
Acked-by: Pekka Enberg <penberg(a)cs.helsinki.fi>
Signed-off-by: Mike Frysinger <vapier(a)gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>

---
arch/blackfin/include/asm/cache.h | 2 ++
1 file changed, 2 insertions(+)

--- 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


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