diff --git a/drivers/staging/sbe-2t3e3/ctrl.c b/drivers/staging/sbe-2t3e3/ctrl.c
index a5825d7f1bbf..d280bcfd660a 100644
--- a/drivers/staging/sbe-2t3e3/ctrl.c
+++ b/drivers/staging/sbe-2t3e3/ctrl.c
@@ -31,7 +31,7 @@ void t3e3_set_frame_type(struct channel *sc, u32 mode)
 	sc->p.frame_type = mode;
 }
 
-void t3e3_set_loopback(struct channel *sc, u32 mode)
+static void t3e3_set_loopback(struct channel *sc, u32 mode)
 {
 	u32 tx, rx;
 
@@ -95,7 +95,7 @@ void t3e3_set_loopback(struct channel *sc, u32 mode)
 }
 
 
-void t3e3_reg_read(struct channel *sc, u32 *reg, u32 *val)
+static void t3e3_reg_read(struct channel *sc, u32 *reg, u32 *val)
 {
 	u32 i;
 
@@ -132,7 +132,7 @@ void t3e3_reg_read(struct channel *sc, u32 *reg, u32 *val)
 	}
 }
 
-void t3e3_reg_write(struct channel *sc, u32 *reg)
+static void t3e3_reg_write(struct channel *sc, u32 *reg)
 {
 	u32 i;
 
@@ -164,12 +164,12 @@ void t3e3_reg_write(struct channel *sc, u32 *reg)
 	}
 }
 
-void t3e3_port_get(struct channel *sc, t3e3_param_t *param)
+static void t3e3_port_get(struct channel *sc, t3e3_param_t *param)
 {
 	memcpy(param, &(sc->p), sizeof(t3e3_param_t));
 }
 
-void t3e3_port_set(struct channel *sc, t3e3_param_t *param)
+static void t3e3_port_set(struct channel *sc, t3e3_param_t *param)
 {
 	if (param->frame_mode != 0xff)
 		cpld_set_frame_mode(sc, param->frame_mode);
@@ -216,7 +216,7 @@ void t3e3_port_set(struct channel *sc, t3e3_param_t *param)
 		cpld_set_scrambler(sc, param->scrambler);
 }
 
-void t3e3_port_get_stats(struct channel *sc,
+static void t3e3_port_get_stats(struct channel *sc,
 			 t3e3_stats_t *stats)
 {
 	u32 result;
@@ -282,7 +282,7 @@ void t3e3_port_get_stats(struct channel *sc,
 	memcpy(stats, &(sc->s), sizeof(t3e3_stats_t));
 }
 
-void t3e3_port_del_stats(struct channel *sc)
+static void t3e3_port_del_stats(struct channel *sc)
 {
 	memset(&(sc->s), 0, sizeof(t3e3_stats_t));
 }