diff options
| author | Luca Coelho <luciano.coelho@intel.com> | 2016-05-10 10:30:56 +0300 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2016-05-10 10:30:56 +0300 |
| commit | bae6692c24236d0203f88a444986d86437a858fa (patch) | |
| tree | 0f9bee1250af3046fa46049736b615b81e60f56e /arch/arc/include/asm/bitops.h | |
| parent | 46167a8fd4248533ad15867e6988ff20e76de641 (diff) | |
| parent | 57fbcce37be7c1d2622b56587c10ade00e96afa3 (diff) | |
Merge tag 'mac80211-next-for-davem-2016-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next into master
To synchronize with Kalle, here's just a big change that affects
all drivers - removing the duplicated enum ieee80211_band and
replacing it by enum nl80211_band. On top of that, just a small
documentation update.
Diffstat (limited to 'arch/arc/include/asm/bitops.h')
| -rw-r--r-- | arch/arc/include/asm/bitops.h | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/arch/arc/include/asm/bitops.h b/arch/arc/include/asm/bitops.h index 57c1f33844d4..0352fb8d21b9 100644 --- a/arch/arc/include/asm/bitops.h +++ b/arch/arc/include/asm/bitops.h @@ -35,21 +35,6 @@ static inline void op##_bit(unsigned long nr, volatile unsigned long *m)\ \ m += nr >> 5; \ \ - /* \ - * ARC ISA micro-optimization: \ - * \ - * Instructions dealing with bitpos only consider lower 5 bits \ - * e.g (x << 33) is handled like (x << 1) by ASL instruction \ - * (mem pointer still needs adjustment to point to next word) \ - * \ - * Hence the masking to clamp @nr arg can be elided in general. \ - * \ - * However if @nr is a constant (above assumed in a register), \ - * and greater than 31, gcc can optimize away (x << 33) to 0, \ - * as overflow, given the 32-bit ISA. Thus masking needs to be \ - * done for const @nr, but no code is generated due to gcc \ - * const prop. \ - */ \ nr &= 0x1f; \ \ __asm__ __volatile__( \ |