seq_printf(sf, "CU_USER_HIGH:\t\t0x%X\n", v[1]);
 }
 
-struct komeda_component_funcs d71_compiz_funcs = {
+static struct komeda_component_funcs d71_compiz_funcs = {
        .update         = d71_compiz_update,
        .disable        = d71_component_disable,
        .dump_register  = d71_compiz_dump,
                seq_printf(sf, "IPS_RGB_YUV_COEFF%u:\t0x%X\n", i, v[i]);
 }
 
-struct komeda_component_funcs d71_improc_funcs = {
+static struct komeda_component_funcs d71_improc_funcs = {
        .update         = d71_improc_update,
        .disable        = d71_component_disable,
        .dump_register  = d71_improc_dump,
        malidp_write32(reg, BLK_CONTROL, value);
 }
 
-void d71_timing_ctrlr_dump(struct komeda_component *c, struct seq_file *sf)
+static void d71_timing_ctrlr_dump(struct komeda_component *c,
+                                 struct seq_file *sf)
 {
        u32 v[8], i;
 
        seq_printf(sf, "BS_USER:\t\t0x%X\n", v[4]);
 }
 
-struct komeda_component_funcs d71_timing_ctrlr_funcs = {
+static struct komeda_component_funcs d71_timing_ctrlr_funcs = {
        .update         = d71_timing_ctrlr_update,
        .disable        = d71_timing_ctrlr_disable,
        .dump_register  = d71_timing_ctrlr_dump,
 
        return 0;
 }
 
-u32 komeda_calc_mclk(struct komeda_crtc_state *kcrtc_st)
+static u32 komeda_calc_mclk(struct komeda_crtc_state *kcrtc_st)
 {
        unsigned long mclk = kcrtc_st->base.adjusted_mode.clock * 1000;
 
        return true;
 }
 
-struct drm_crtc_helper_funcs komeda_crtc_helper_funcs = {
+static struct drm_crtc_helper_funcs komeda_crtc_helper_funcs = {
        .atomic_check   = komeda_crtc_atomic_check,
        .atomic_flush   = komeda_crtc_atomic_flush,
        .atomic_enable  = komeda_crtc_atomic_enable,
 
        },
 };
 
-const struct of_device_id komeda_of_match[] = {
+static const struct of_device_id komeda_of_match[] = {
        { .compatible = "arm,mali-d71", .data = &komeda_products[MALI_D71], },
        {},
 };
 
        devm_kfree(mdev->dev, pipe);
 }
 
-struct komeda_component **
+static struct komeda_component **
 komeda_pipeline_get_component_pos(struct komeda_pipeline *pipe, int id)
 {
        struct komeda_dev *mdev = pipe->mdev;
 
        return old != new;
 }
 
-struct komeda_pipeline_state *
+static struct komeda_pipeline_state *
 komeda_pipeline_get_state(struct komeda_pipeline *pipe,
                          struct drm_atomic_state *state)
 {
        return NULL;
 }
 
-struct komeda_pipeline_state *
+static struct komeda_pipeline_state *
 komeda_pipeline_get_new_state(struct komeda_pipeline *pipe,
                              struct drm_atomic_state *state)
 {
 }
 
 /* Assign pipeline for crtc */
-struct komeda_pipeline_state *
+static struct komeda_pipeline_state *
 komeda_pipeline_get_state_and_set_crtc(struct komeda_pipeline *pipe,
                                       struct drm_atomic_state *state,
                                       struct drm_crtc *crtc)
        return 0;
 }
 
-void komeda_pipeline_unbound_components(struct komeda_pipeline *pipe,
-                                       struct komeda_pipeline_state *new)
+static void
+komeda_pipeline_unbound_components(struct komeda_pipeline *pipe,
+                                  struct komeda_pipeline_state *new)
 {
        struct drm_atomic_state *drm_st = new->obj.state;
        struct komeda_pipeline_state *old = priv_to_pipe_st(pipe->obj.state);
 
  * RETURNS:
  * Zero for success or -errno
  */
-int komeda_plane_atomic_check(struct drm_plane *plane,
-                             struct drm_plane_state *state)
+static int
+komeda_plane_atomic_check(struct drm_plane *plane,
+                         struct drm_plane_state *state)
 {
        struct komeda_plane *kplane = to_kplane(plane);
        struct komeda_plane_state *kplane_st = to_kplane_st(state);
 /* plane doesn't represent a real HW, so there is no HW update for plane.
  * komeda handles all the HW update in crtc->atomic_flush
  */
-void komeda_plane_atomic_update(struct drm_plane *plane,
-                               struct drm_plane_state *old_state)
+static void
+komeda_plane_atomic_update(struct drm_plane *plane,
+                          struct drm_plane_state *old_state)
 {
 }