diff options
Diffstat (limited to 'arch/sparc')
-rw-r--r-- | arch/sparc/include/asm/spinlock_32.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/sparc/include/asm/spinlock_32.h b/arch/sparc/include/asm/spinlock_32.h index 5f5b8bf3f50d..bcc98fc35281 100644 --- a/arch/sparc/include/asm/spinlock_32.h +++ b/arch/sparc/include/asm/spinlock_32.h | |||
@@ -131,6 +131,15 @@ static inline void arch_write_lock(arch_rwlock_t *rw) | |||
131 | *(volatile __u32 *)&lp->lock = ~0U; | 131 | *(volatile __u32 *)&lp->lock = ~0U; |
132 | } | 132 | } |
133 | 133 | ||
134 | static void inline arch_write_unlock(arch_rwlock_t *lock) | ||
135 | { | ||
136 | __asm__ __volatile__( | ||
137 | " st %%g0, [%0]" | ||
138 | : /* no outputs */ | ||
139 | : "r" (lock) | ||
140 | : "memory"); | ||
141 | } | ||
142 | |||
134 | static inline int arch_write_trylock(arch_rwlock_t *rw) | 143 | static inline int arch_write_trylock(arch_rwlock_t *rw) |
135 | { | 144 | { |
136 | unsigned int val; | 145 | unsigned int val; |
@@ -175,8 +184,6 @@ static inline int __arch_read_trylock(arch_rwlock_t *rw) | |||
175 | res; \ | 184 | res; \ |
176 | }) | 185 | }) |
177 | 186 | ||
178 | #define arch_write_unlock(rw) do { (rw)->lock = 0; } while(0) | ||
179 | |||
180 | #define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock) | 187 | #define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock) |
181 | #define arch_read_lock_flags(rw, flags) arch_read_lock(rw) | 188 | #define arch_read_lock_flags(rw, flags) arch_read_lock(rw) |
182 | #define arch_write_lock_flags(rw, flags) arch_write_lock(rw) | 189 | #define arch_write_lock_flags(rw, flags) arch_write_lock(rw) |