[PATCH 27/43] drm/radeon/radeon_encoders: Move 'radeon_atom_backlight_init's prototype to shared header

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/radeon/atombios_encoders.c:186:6: warning: no previous prototype for ‘radeon_atom_backlight_init’ [-Wmissing-prototypes]
 186 | void radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder,
 | ^~~~~~~~~~~~~~~~~~~~~~~~~~

Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: "Christian König" <christian.koenig at amd.com>
Cc: David Airlie <airlied at linux.ie>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: amd-gfx at lists.freedesktop.org
Cc: dri-devel at lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones at linaro.org>
---
 drivers/gpu/drm/radeon/radeon_atombios.h | 4 ++++
 drivers/gpu/drm/radeon/radeon_encoders.c | 6 +-----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.h b/drivers/gpu/drm/radeon/radeon_atombios.h
index a895a7002c3d3..fd03755e6fa2c 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.h
+++ b/drivers/gpu/drm/radeon/radeon_atombios.h
@@ -28,14 +28,18 @@
 #ifndef __RADEON_ATOMBIOS_H__
 #define __RADEON_ATOMBIOS_H__
 
+struct drm_connector;
 struct drm_device;
 struct drm_display_mode;
 struct radeon_device;
+struct radeon_encoder;
 
 bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index,
 				struct drm_display_mode *mode);
 void radeon_add_atom_encoder(struct drm_device *dev, uint32_t encoder_enum,
 			     uint32_t supported_device, u16 caps);
+void radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder,
+				struct drm_connector *drm_connector);
 
 
 #endif                         /* __RADEON_ATOMBIOS_H__ */
diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index b60a373d3ead3..46549d5179ee9 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -31,14 +31,10 @@
 #include <drm/radeon_drm.h>
 
 #include "radeon.h"
+#include "radeon_atombios.h"
 #include "radeon_legacy_encoders.h"
 #include "atom.h"
 
-extern void
-radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder,
-			   struct drm_connector *drm_connector);
-
-
 static uint32_t radeon_encoder_clones(struct drm_encoder *encoder)
 {
 	struct drm_device *dev = encoder->dev;
-- 
2.25.1