diff --git a/arch/arm/mach-rk30/include/mach/iomux.h b/arch/arm/mach-rk30/include/mach/iomux.h
index c12549e6ce7a..1035a96a9950 100755
--- a/arch/arm/mach-rk30/include/mach/iomux.h
+++ b/arch/arm/mach-rk30/include/mach/iomux.h
@@ -825,7 +825,7 @@ struct mux_config {
 	unsigned int flags;
 };
 
-extern int rk30_iomux_init(void);
+extern int __init rk30_iomux_init(void);
 extern void rk30_mux_api_set(char *name, unsigned int mode);
 
 #endif
diff --git a/arch/arm/mach-rk30/iomux.c b/arch/arm/mach-rk30/iomux.c
index 9de025f7fe21..d14be4c29dc9 100755
--- a/arch/arm/mach-rk30/iomux.c
+++ b/arch/arm/mach-rk30/iomux.c
@@ -252,7 +252,7 @@ void rk30_mux_set(struct mux_config *cfg)
 	return;
 }
 
-int rk30_iomux_init(void)
+int __init rk30_iomux_init(void)
 {
 	int i;
 	printk("%s\n",__func__);
@@ -348,7 +348,7 @@ int rk30_iomux_init(void)
 
 	return 0;
 }
-EXPORT_SYMBOL(rk30_iomux_init);
+
 /*
  *config iomux : input iomux name and iomux flags
  */ 
@@ -371,4 +371,3 @@ void rk30_mux_api_set(char *name, unsigned int mode)
 }
 EXPORT_SYMBOL(rk30_mux_api_set);
 
-