openrisc: Make cpu_relax() invoke barrier()

Make cpu_relax() invoke barrier() to be the same as other arches.

Signed-off-by: Vladimir Murzin <murzin.v@gmail.com>
Signed-off-by: Jonas Bonn <jonas@southpole.se>

diff --git a/arch/openrisc/include/asm/processor.h b/arch/openrisc/include/asm/processor.h
index 30462f1fe959298cdf492bd8c18e3879fce7a50f..43decdbdb2ed8c8d4a4efafd164c99aae33e23c7 100644 (file)
--- a/arch/openrisc/include/asm/processor.h
+++ b/arch/openrisc/include/asm/processor.h
@@ -103,7 +103,7 @@ extern unsigned long thread_saved_pc(struct task_struct *t);
 
 #define init_stack      (init_thread_union.stack)
 
-#define cpu_relax()     do { } while (0)
+#define cpu_relax()     barrier()
 
 #endif /* __ASSEMBLY__ */
 #endif /* __ASM_OPENRISC_PROCESSOR_H */