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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2010-05-19 23:21:38 -0400
committerMike Frysinger <vapier@gentoo.org>2010-05-22 14:19:13 -0400
commit76b99699a2bbf9efdb578f9a38a202af2ecb354b (patch)
treeef7eba05b7b611009d2fb108e58b655550387416 /arch
parenteb5400b6131e6ebaacf809357643a22a72d5cc4c (diff)
Blackfin: set ARCH_KMALLOC_MINALIGN
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@lab.ntt.co.jp> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/blackfin/include/asm/cache.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/cache.h b/arch/blackfin/include/asm/cache.h
index 8542bc31f63c..93f6c634fdf4 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