diff options
| author | Helge Deller <deller@gmx.de> | 2020-07-28 18:56:14 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-19 08:16:26 +0200 |
| commit | 638e45c39f30ca6e76da6fc06097886c4b0ebf5c (patch) | |
| tree | 4de14c6c0b5f41b4ae88b06ff3bbbaeac65ea4c4 /arch/parisc/include | |
| parent | 431d999bd098144265fd399f16c888d01a12bc73 (diff) | |
Revert "parisc: Revert "Release spinlocks using ordered store""
commit 157e9afcc4fa25068b0e8743bc254a9b56010e13 upstream.
This reverts commit 86d4d068df573a8c2105554624796c086d6bec3d.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v5.0+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/parisc/include')
| -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 8a63515f03bf..16aec9ba2580 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) |