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    Subject[PATCH] [ARM] Add missing include "asm/memory.h"
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    This patch fixes below build error by adding the missing asm/memory.h,
    which is needed for arch_is_coherent().

    $ make pxa3xx_defconfig; make
    CC init/do_mounts_rd.o
    In file included from include/linux/list_bl.h:5,
    from include/linux/rculist_bl.h:7,
    from include/linux/dcache.h:7,
    from include/linux/fs.h:381,
    from init/do_mounts_rd.c:3:
    include/linux/bit_spinlock.h: In function 'bit_spin_unlock':
    include/linux/bit_spinlock.h:61: error: implicit declaration of function 'arch_is_coherent'
    make[1]: *** [init/do_mounts_rd.o] Error 1
    make: *** [init] Error 2

    Signed-off-by: Axel Lin <axel.lin@gmail.com>
    ---
    arch/arm/include/asm/system.h | 1 +
    1 files changed, 1 insertions(+), 0 deletions(-)

    diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
    index ec4327a..3222ab8 100644
    --- a/arch/arm/include/asm/system.h
    +++ b/arch/arm/include/asm/system.h
    @@ -155,6 +155,7 @@ extern unsigned int user_debug;
    #define rmb() dmb()
    #define wmb() mb()
    #else
    +#include <asm/memory.h>
    #define mb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
    #define rmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
    #define wmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
    --
    1.7.2




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