diff --git a/arch/powerpc/platforms/83xx/km83xx.c b/arch/powerpc/platforms/83xx/km83xx.c
index 108e1e4d2683..d9eed0decb28 100644
--- a/arch/powerpc/platforms/83xx/km83xx.c
+++ b/arch/powerpc/platforms/83xx/km83xx.c
@@ -39,7 +39,7 @@
 
 #define SVR_REV(svr)    (((svr) >>  0) & 0xFFFF) /* Revision field */
 
-static void quirk_mpc8360e_qe_enet10(void)
+static void __init quirk_mpc8360e_qe_enet10(void)
 {
 	/*
 	 * handle mpc8360E Erratum QE_ENET10:
diff --git a/arch/powerpc/platforms/83xx/mpc834x_mds.c b/arch/powerpc/platforms/83xx/mpc834x_mds.c
index 6d91bdce0a18..0713deffb40c 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_mds.c
@@ -35,7 +35,7 @@
 #include "mpc83xx.h"
 
 #define BCSR5_INT_USB		0x02
-static int mpc834xemds_usb_cfg(void)
+static int __init mpc834xemds_usb_cfg(void)
 {
 	struct device_node *np;
 	void __iomem *bcsr_regs = NULL;
diff --git a/arch/powerpc/platforms/83xx/mpc837x_mds.c b/arch/powerpc/platforms/83xx/mpc837x_mds.c
index f28d166ea7db..fc88ab97f6e3 100644
--- a/arch/powerpc/platforms/83xx/mpc837x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc837x_mds.c
@@ -23,7 +23,7 @@
 #define BCSR12_USB_SER_PIN	0x80
 #define BCSR12_USB_SER_DEVICE	0x02
 
-static int mpc837xmds_usb_cfg(void)
+static int __init mpc837xmds_usb_cfg(void)
 {
 	struct device_node *np;
 	const void *phy_type, *mode;
diff --git a/arch/powerpc/platforms/83xx/mpc837x_rdb.c b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
index 7fb7684c256b..5d48c6842098 100644
--- a/arch/powerpc/platforms/83xx/mpc837x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
@@ -18,7 +18,7 @@
 
 #include "mpc83xx.h"
 
-static void mpc837x_rdb_sd_cfg(void)
+static void __init mpc837x_rdb_sd_cfg(void)
 {
 	void __iomem *im;
 
diff --git a/arch/powerpc/platforms/83xx/mpc83xx.h b/arch/powerpc/platforms/83xx/mpc83xx.h
index a30d30588cf6..aea803ba3a15 100644
--- a/arch/powerpc/platforms/83xx/mpc83xx.h
+++ b/arch/powerpc/platforms/83xx/mpc83xx.h
@@ -68,9 +68,9 @@
 
 extern void __noreturn mpc83xx_restart(char *cmd);
 extern long mpc83xx_time_init(void);
-extern int mpc837x_usb_cfg(void);
-extern int mpc834x_usb_cfg(void);
-extern int mpc831x_usb_cfg(void);
+int __init mpc837x_usb_cfg(void);
+int __init mpc834x_usb_cfg(void);
+int __init mpc831x_usb_cfg(void);
 extern void mpc83xx_ipic_init_IRQ(void);
 
 #ifdef CONFIG_PCI
diff --git a/arch/powerpc/platforms/83xx/usb.c b/arch/powerpc/platforms/83xx/usb.c
index 3d247d726ed5..b0bda20aaccf 100644
--- a/arch/powerpc/platforms/83xx/usb.c
+++ b/arch/powerpc/platforms/83xx/usb.c
@@ -20,7 +20,7 @@
 
 
 #ifdef CONFIG_PPC_MPC834x
-int mpc834x_usb_cfg(void)
+int __init mpc834x_usb_cfg(void)
 {
 	unsigned long sccr, sicrl, sicrh;
 	void __iomem *immap;
@@ -96,7 +96,7 @@ int mpc834x_usb_cfg(void)
 #endif /* CONFIG_PPC_MPC834x */
 
 #ifdef CONFIG_PPC_MPC831x
-int mpc831x_usb_cfg(void)
+int __init mpc831x_usb_cfg(void)
 {
 	u32 temp;
 	void __iomem *immap, *usb_regs;
@@ -209,7 +209,7 @@ out:
 #endif /* CONFIG_PPC_MPC831x */
 
 #ifdef CONFIG_PPC_MPC837x
-int mpc837x_usb_cfg(void)
+int __init mpc837x_usb_cfg(void)
 {
 	void __iomem *immap;
 	struct device_node *np = NULL;