diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index ae020ad7b318..cef0f3111cd3 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -40,6 +40,7 @@
 #include "radeon_asic.h"
 #include "radeon_audio.h"
 #include "radeon_ucode.h"
+#include "si.h"
 
 #define SH_MEM_CONFIG_GFX_DEFAULT \
 	ALIGNMENT_MODE(SH_MEM_ALIGNMENT_MODE_UNALIGNED)
@@ -127,9 +128,6 @@ MODULE_FIRMWARE("radeon/mullins_mec.bin");
 MODULE_FIRMWARE("radeon/mullins_rlc.bin");
 MODULE_FIRMWARE("radeon/mullins_sdma.bin");
 
-extern void si_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc);
-extern void si_rlc_reset(struct radeon_device *rdev);
-extern void si_init_uvd_internal_cg(struct radeon_device *rdev);
 static u32 cik_get_cu_active_bitmap(struct radeon_device *rdev, u32 se, u32 sh);
 extern int cik_sdma_resume(struct radeon_device *rdev);
 extern void cik_sdma_enable(struct radeon_device *rdev, bool enable);
diff --git a/drivers/gpu/drm/radeon/si.h b/drivers/gpu/drm/radeon/si.h
index a1751ae560f0..f483a64d1705 100644
--- a/drivers/gpu/drm/radeon/si.h
+++ b/drivers/gpu/drm/radeon/si.h
@@ -25,8 +25,12 @@
 #define __SI_H__
 
 struct radeon_device;
+struct radeon_mc;
 
 int si_mc_load_microcode(struct radeon_device *rdev);
 u32 si_gpu_check_soft_reset(struct radeon_device *rdev);
+void si_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc);
+void si_rlc_reset(struct radeon_device *rdev);
+void si_init_uvd_internal_cg(struct radeon_device *rdev);
 
 #endif                         /* __SI_H__ */