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| author |   Helge Deller <deller@gmx.de> | 2020-07-28 18:56:14 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2020-07-28 18:56:14 +0200 |
| commit | 157e9afcc4fa25068b0e8743bc254a9b56010e13 (patch) | |
| tree | 12067408b5efc801bd2d56085cce4d7747201557 /arch/parisc/include/asm/spinlock.h | |
| parent | Revert "parisc: Use ldcw instruction for SMP spinlock release barrier" (diff) | |
| download | linux-dev-157e9afcc4fa25068b0e8743bc254a9b56010e13.tar.xz linux-dev-157e9afcc4fa25068b0e8743bc254a9b56010e13.zip | |
Revert "parisc: Revert "Release spinlocks using ordered store""
This reverts commit 86d4d068df573a8c2105554624796c086d6bec3d.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v5.0+
Diffstat (limited to 'arch/parisc/include/asm/spinlock.h')
| -rw-r--r-- | arch/parisc/include/asm/spinlock.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/parisc/include/asm/spinlock.h b/arch/parisc/include/asm/spinlock.h index 6f85ca70ce23..51b6c47f802f 100644 --- a/arch/parisc/include/asm/spinlock.h +++ b/arch/parisc/include/asm/spinlock.h @@ -37,8 +37,8 @@ static inline void arch_spin_unlock(arch_spinlock_t *x) volatile unsigned int *a; a = __ldcw_align(x); - mb(); - *a = 1; + /* Release with ordered store. */ + __asm__ __volatile__("stw,ma %0,0(%1)" : : "r"(1), "r"(a) : "memory"); } static inline int arch_spin_trylock(arch_spinlock_t *x) |