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Diffstat (limited to 'arch/arm/include/asm/spinlock.h')
-rw-r--r--arch/arm/include/asm/spinlock.h16
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)
119 119
120static inline void arch_spin_unlock(arch_spinlock_t *lock) 120static inline void arch_spin_unlock(arch_spinlock_t *lock)
121{ 121{
122 unsigned long tmp;
123 u32 slock;
124
125 smp_mb(); 122 smp_mb();
126 123 lock->tickets.owner++;
127 __asm__ __volatile__(
128" mov %1, #1\n"
129"1: ldrex %0, [%2]\n"
130" uadd16 %0, %0, %1\n"
131" strex %1, %0, [%2]\n"
132" teq %1, #0\n"
133" bne 1b"
134 : "=&r" (slock), "=&r" (tmp)
135 : "r" (&lock->slock)
136 : "cc");
137
138 dsb_sev(); 124 dsb_sev();
139} 125}
140 126