1 files changed, 2 insertions, 1 deletions

diff --git a/include/asm-xtensa/processor.h b/include/asm-xtensa/processor.h
index d1d72ad36f08..8b96e77c9d82 100644
--- a/include/asm-xtensa/processor.h
+++ b/include/asm-xtensa/processor.h
@@ -20,6 +20,7 @@
 #include <xtensa/config/tie.h>
 #include <xtensa/config/system.h>
 
+#include <linux/compiler.h>
 #include <asm/ptrace.h>
 #include <asm/types.h>
 #include <asm/coprocessor.h>
@@ -191,7 +192,7 @@ extern unsigned long get_wchan(struct task_struct *p);
 #define KSTK_EIP(tsk)           (task_pt_regs(tsk)->pc)
 #define KSTK_ESP(tsk)           (task_pt_regs(tsk)->areg[1])
 
-#define cpu_relax()  do { } while (0)
+#define cpu_relax()  barrier()
 
 /* Special register access. */