Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.18 54/92] arch/powerpc: provide zero_bytemask() for big-endian | Date | Wed, 9 Aug 2017 13:37:22 -0700 |
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3.18-stable review patch. If anyone has any objections, please let me know.
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From: Chris Metcalf <cmetcalf@ezchip.com>
commit 7a5692e6e533fd379081ab06fb58f3f5ee4d80bc upstream.
For some reason, only the little-endian flavor of powerpc provided the zero_bytemask() implementation.
Reported-by: Michal Sojka <sojkam1@fel.cvut.cz> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/powerpc/include/asm/word-at-a-time.h | 5 +++++ 1 file changed, 5 insertions(+)
--- 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 lon return (val + c->high_bits) & ~rhs; } +static inline unsigned long zero_bytemask(unsigned long mask) +{ + return ~1ul << __fls(mask); +} + #else #ifdef CONFIG_64BIT
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