diff --git a/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c b/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
index 6d49c7143c67..fa46caee958a 100644
--- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
@@ -480,7 +480,7 @@ static const struct dc_debug_options debug_defaults = {
 		.disable_clock_gate = true,
 };
 
-struct clock_source *dce120_clock_source_create(
+static struct clock_source *dce120_clock_source_create(
 	struct dc_context *ctx,
 	struct dc_bios *bios,
 	enum clock_source_id id,
@@ -503,14 +503,14 @@ struct clock_source *dce120_clock_source_create(
 	return NULL;
 }
 
-void dce120_clock_source_destroy(struct clock_source **clk_src)
+static void dce120_clock_source_destroy(struct clock_source **clk_src)
 {
 	kfree(TO_DCE110_CLK_SRC(*clk_src));
 	*clk_src = NULL;
 }
 
 
-bool dce120_hw_sequencer_create(struct dc *dc)
+static bool dce120_hw_sequencer_create(struct dc *dc)
 {
 	/* All registers used by dce11.2 match those in dce11 in offset and
 	 * structure