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    Subject[PATCH 04/31] Add avr32-specific parity functions
    From
    Date
    From: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>

    Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>
    ---
    arch/avr32/include/asm/bitops.h | 32 ++++++++++++++++++++++++++++++++
    1 file changed, 32 insertions(+)

    diff --git a/arch/avr32/include/asm/bitops.h b/arch/avr32/include/asm/bitops.h
    index 910d537..80d7005 100644
    --- a/arch/avr32/include/asm/bitops.h
    +++ b/arch/avr32/include/asm/bitops.h
    @@ -300,6 +300,38 @@ static inline int ffs(unsigned long word)
    #include <asm-generic/bitops/hweight.h>
    #include <asm-generic/bitops/lock.h>

    +static inline unsigned int __arch_parity4(unsigned int w)
    +{
    + w ^= w >> 2;
    + w ^= w >> 1;
    + return w & 1;
    +}
    +
    +static inline unsigned int __arch_parity8(unsigned int w)
    +{
    + w ^= w >> 4;
    + return __arch_parity4(w);
    +}
    +
    +static inline unsigned int __arch_parity16(unsigned int w)
    +{
    + w ^= w >> 8;
    + return __arch_parity8(w);
    +}
    +
    +static inline unsigned int __arch_parity32(unsigned int w)
    +{
    + w ^= w >> 16;
    + return __arch_parity16(w);
    +}
    +
    +static inline unsigned int __arch_parity64(__u64 w)
    +{
    + return __arch_parity32((unsigned int)(w >> 32) ^ (unsigned int)w);
    +}
    +
    +#include <asm-generic/bitops/const_parity.h>
    +
    extern unsigned long find_next_zero_bit_le(const void *addr,
    unsigned long size, unsigned long offset);
    #define find_next_zero_bit_le find_next_zero_bit_le
    --
    2.5.5
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