diff --git a/arch/arm/mach-omap1/include/mach/usb.h b/arch/arm/mach-omap1/include/mach/usb.h
index a7c5559caef2c0ca4dfe73826749b7fda7f83327..eb76628ff84310f28067bebf06b127e0bdb72cd5 100644
--- a/arch/arm/mach-omap1/include/mach/usb.h
+++ b/arch/arm/mach-omap1/include/mach/usb.h
@@ -10,8 +10,6 @@
 
 #include <linux/platform_data/usb-omap1.h>
 
-void omap_otg_init(struct omap_usb_config *config);
-
 #if IS_ENABLED(CONFIG_USB)
 void omap1_usb_init(struct omap_usb_config *pdata);
 #else
diff --git a/arch/arm/mach-omap1/usb.c b/arch/arm/mach-omap1/usb.c
index d4aa118f4ed61d604210c12c5f409a36fa029d5c..0b4ed94c7b99d64098bf8085d3af98ec3886754c 100644
--- a/arch/arm/mach-omap1/usb.c
+++ b/arch/arm/mach-omap1/usb.c
@@ -58,7 +58,7 @@
 
 #ifdef	CONFIG_ARCH_OMAP_OTG
 
-void __init
+static void __init
 omap_otg_init(struct omap_usb_config *config)
 {
 	u32		syscon;
@@ -166,7 +166,7 @@ omap_otg_init(struct omap_usb_config *config)
 }
 
 #else
-void omap_otg_init(struct omap_usb_config *config) {}
+static void omap_otg_init(struct omap_usb_config *config) {}
 #endif
 
 #if IS_ENABLED(CONFIG_USB_OMAP)