diff --git a/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c b/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c
index 5b4506a71126b72407d19794ba894125681338cd..15409e96449d08c2cc206e5b017a0fbcc1e7bbd6 100644
--- a/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c
+++ b/drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c
@@ -436,7 +436,7 @@ static int gmin_gpio1_ctrl(struct v4l2_subdev *subdev, int on)
 	return -EINVAL;
 }
 
-int gmin_v1p2_ctrl(struct v4l2_subdev *subdev, int on)
+static int gmin_v1p2_ctrl(struct v4l2_subdev *subdev, int on)
 {
 	struct gmin_subdev *gs = find_gmin_subdev(subdev);
 
@@ -455,7 +455,8 @@ int gmin_v1p2_ctrl(struct v4l2_subdev *subdev, int on)
 
 	return -EINVAL;
 }
-int gmin_v1p8_ctrl(struct v4l2_subdev *subdev, int on)
+
+static int gmin_v1p8_ctrl(struct v4l2_subdev *subdev, int on)
 {
 	struct gmin_subdev *gs = find_gmin_subdev(subdev);
 	int ret;
@@ -491,7 +492,7 @@ int gmin_v1p8_ctrl(struct v4l2_subdev *subdev, int on)
 	return -EINVAL;
 }
 
-int gmin_v2p8_ctrl(struct v4l2_subdev *subdev, int on)
+static int gmin_v2p8_ctrl(struct v4l2_subdev *subdev, int on)
 {
 	struct gmin_subdev *gs = find_gmin_subdev(subdev);
 	int ret;
@@ -527,7 +528,7 @@ int gmin_v2p8_ctrl(struct v4l2_subdev *subdev, int on)
 	return -EINVAL;
 }
 
-int gmin_flisclk_ctrl(struct v4l2_subdev *subdev, int on)
+static int gmin_flisclk_ctrl(struct v4l2_subdev *subdev, int on)
 {
 	int ret = 0;
 	struct gmin_subdev *gs = find_gmin_subdev(subdev);