diff --git a/[refs] b/[refs]
index 6421ac0168fb..28d7d0b16f26 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a0fba3eb059e73fed2d376a901f8117734c12f1f
+refs/heads/master: 3f6aa0b113846a8628baa649af422cfc6fb1d786
diff --git a/trunk/arch/sparc/include/asm/spinlock_32.h b/trunk/arch/sparc/include/asm/spinlock_32.h
index 5f5b8bf3f50d..bcc98fc35281 100644
--- a/trunk/arch/sparc/include/asm/spinlock_32.h
+++ b/trunk/arch/sparc/include/asm/spinlock_32.h
@@ -131,6 +131,15 @@ static inline void arch_write_lock(arch_rwlock_t *rw)
 	*(volatile __u32 *)&lp->lock = ~0U;
 }
 
+static void inline arch_write_unlock(arch_rwlock_t *lock)
+{
+	__asm__ __volatile__(
+"	st		%%g0, [%0]"
+	: /* no outputs */
+	: "r" (lock)
+	: "memory");
+}
+
 static inline int arch_write_trylock(arch_rwlock_t *rw)
 {
 	unsigned int val;
@@ -175,8 +184,6 @@ static inline int __arch_read_trylock(arch_rwlock_t *rw)
 	res; \
 })
 
-#define arch_write_unlock(rw)	do { (rw)->lock = 0; } while(0)
-
 #define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
 #define arch_read_lock_flags(rw, flags)   arch_read_lock(rw)
 #define arch_write_lock_flags(rw, flags)  arch_write_lock(rw)