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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-20 14:27:58 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-20 14:27:58 -0800 |
commit | 32f9aab8ebd886211a7b3e552753af014c3e5225 (patch) | |
tree | f95ca8b49a73c6c4baa8cf9d47c65db67a1f5f58 /arch/arm/include/asm/spinlock.h | |
parent | e177bb587ea0fade3d9a86f6667da8d89bea3607 (diff) | |
parent | 1b1c7409b75a8b62906b78b84c8469002072b738 (diff) | |
download | linux-32f9aab8ebd886211a7b3e552753af014c3e5225.tar.bz2 |
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates (part one) from Russell King:
- MMC patches from Ulf Hansson and Pawel Moll. These add support for
DDR mode and the latest variant found on ARM Versatile Express, as
well as a number of cleanups.
- A fix for to improve the behaviour of ARMs sched_clock()
- Changes to the ARM ioremap() code. I'm not convinced with the
primary arguments for this, but it's been around for a while, and
people seem happy with it - and the "other" justification for this is
at
http://lkml.org/lkml/2012/12/6/184
- Add SCHED_HRTICK to ARMs Kconfig
- Making the ARM SHA/AES code Thumb-2 compatible
- A collection of other small updates.
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (26 commits)
ARM: add SCHED_HRTICK config option
ARM: 7650/1: mm: replace direct access to mm->context.id with new macro
ARM: 7649/1: mm: mm->context.id fix for big-endian
ARM: 7648/1: pci: Allow passing per-controller private data
ARM: 7647/1: pci: Keep pci_common_init() around after init
ARM: fix warnings introduced by previous patch
ARM: 7646/1: mm: use static_vm for managing static mapped areas
ARM: 7645/1: ioremap: introduce an infrastructure for static mapped area
ARM: 7644/1: vmregion: remove vmregion code entirely
MAINTAINERS: Re-assert MMCI driver maintainer status
MAINTAINERS: add additional file for MMCI driver
MAINTAINERS: add maintainer entry for AMBA serial drivers
ARM: 7637/1: memory: use SZ_ constants for defining the virtual memory layout
ARM: 7643/1: sched: correct update_sched_clock()
ARM: 7635/1: versatile: fix the PCI IRQ regression
ARM: 7639/1: cache-l2x0: add missed dummy outer_resume entry
ARM: 7630/1: mmc: mmci: Fixup and cleanup code for DMA handling
ARM: 7632/1: spinlock: avoid exclusive accesses on unlock() path
ARM: 7631/1: mmc: mmci: Add new VE MMCI variant
ARM: 7623/1: mmc: mmci: Fixup clock gating when freq is 0 for ST-variants
...
Diffstat (limited to 'arch/arm/include/asm/spinlock.h')
-rw-r--r-- | arch/arm/include/asm/spinlock.h | 16 |
1 files changed, 1 insertions, 15 deletions
diff --git a/arch/arm/include/asm/spinlock.h b/arch/arm/include/asm/spinlock.h index b4ca707d0a69..6220e9fdf4c7 100644 --- a/arch/arm/include/asm/spinlock.h +++ b/arch/arm/include/asm/spinlock.h @@ -119,22 +119,8 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock) static inline void arch_spin_unlock(arch_spinlock_t *lock) { - unsigned long tmp; - u32 slock; - smp_mb(); - - __asm__ __volatile__( -" mov %1, #1\n" -"1: ldrex %0, [%2]\n" -" uadd16 %0, %0, %1\n" -" strex %1, %0, [%2]\n" -" teq %1, #0\n" -" bne 1b" - : "=&r" (slock), "=&r" (tmp) - : "r" (&lock->slock) - : "cc"); - + lock->tickets.owner++; dsb_sev(); } |