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    Subject[PATCH -mm 1/6] blackfin: set ARCH_KMALLOC_MINALIGN
    Date
    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>
    Cc: Mike Frysinger <vapier@gentoo.org>
    Cc: stable@kernel.org
    ---
    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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