On Wed, 2015-10-07 at 10:46 -0400, Chris Metcalf wrote:
> For some reason, only the little-endian flavor of
> powerpc provided the zero_bytemask() implementation.
Because previously it was optional unless DCACHE_WORD_ACCESS was enabled.
> Reported-by: Michal Sojka <sojk...@fel.cvut.cz>
> Signed-off-by: Chris Metcalf <cmetc...@ezchip.com>
> ---
> arch/powerpc/include/asm/word-at-a-time.h | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/powerpc/include/asm/word-at-a-time.h
> b/arch/powerpc/include/asm/word-at-a-time.h
> index 5b3a903adae6..e4396a7d0f7c 100644
> --- a/arch/powerpc/include/asm/word-at-a-time.h
> +++ b/arch/powerpc/include/asm/word-at-a-time.h
> @@ -40,6 +40,11 @@ static inline bool has_zero(unsigned long val, unsigned
> long *data, const struct
> return (val + c->high_bits) & ~rhs;
> }
>
> +static inline unsigned long zero_bytemask(unsigned long mask)
> +{
> + return ~1ul << __fls(mask);
> +}
> +
> #else
>
> #ifdef CONFIG_64BIT
This looks right, and I tested it too so have an ack if you want it:
Acked-by: Michael Ellerman <m...@ellerman.id.au>
If you can CC linuxppc-...@lists.ozlabs.org in future on powerpc patches I'll
notice them quicker, I know I was CC'ed on this but because it also went to
LKML it got put in my lkml folder.
cheers
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