diff options
| author | Chris Metcalf <cmetcalf@ezchip.com> | 2015-10-07 09:29:11 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-11 09:30:13 -0700 |
| commit | d9110554bb83c5ff13d5d3b6014694339613d594 (patch) | |
| tree | b9073e4cd0c34c1f738d290c694ae3dad8e21c1b /arch | |
| parent | fa66daa2a6f8fe305e3c2e8a513d051f31a78847 (diff) | |
arch/powerpc: provide zero_bytemask() for big-endian
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/word-at-a-time.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/word-at-a-time.h b/arch/powerpc/include/asm/word-at-a-time.h index 7043539e0248..4afe66aa1400 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 |