drm: make drm_vblank_{get,put}() static

As they are not used anywhere outside drm_irq.c make them static.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465308482-15104-4-git-send-email-gustavo@padovan.org

drivers/gpu/drm/drm_irq.c

@@ -1108,7 +1108,7 @@ static int drm_vblank_enable(struct drm_device *dev, unsigned int pipe)
  * Returns:
  * Zero on success or a negative error code on failure.
  */
-int drm_vblank_get(struct drm_device *dev, unsigned int pipe)
+static int drm_vblank_get(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
 	unsigned long irqflags;
@@ -1134,7 +1134,6 @@ int drm_vblank_get(struct drm_device *dev, unsigned int pipe)
 
 	return ret;
 }
-EXPORT_SYMBOL(drm_vblank_get);
 
 /**
  * drm_crtc_vblank_get - get a reference count on vblank events
@@ -1143,8 +1142,6 @@ EXPORT_SYMBOL(drm_vblank_get);
  * Acquire a reference count on vblank events to avoid having them disabled
  * while in use.
  *
- * This is the native kms version of drm_vblank_get().
- *
  * Returns:
  * Zero on success or a negative error code on failure.
  */
@@ -1164,7 +1161,7 @@ EXPORT_SYMBOL(drm_crtc_vblank_get);
  *
  * This is the legacy version of drm_crtc_vblank_put().
  */
-void drm_vblank_put(struct drm_device *dev, unsigned int pipe)
+static void drm_vblank_put(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
 
@@ -1185,7 +1182,6 @@ void drm_vblank_put(struct drm_device *dev, unsigned int pipe)
 				  jiffies + ((drm_vblank_offdelay * HZ)/1000));
 	}
 }
-EXPORT_SYMBOL(drm_vblank_put);
 
 /**
  * drm_crtc_vblank_put - give up ownership of vblank events
@@ -1193,8 +1189,6 @@ EXPORT_SYMBOL(drm_vblank_put);
  *
  * Release ownership of a given vblank counter, turning off interrupts
  * if possible. Disable interrupts after drm_vblank_offdelay milliseconds.
- *
- * This is the native kms version of drm_vblank_put().
  */
 void drm_crtc_vblank_put(struct drm_crtc *crtc)
 {

include/drm/drmP.h

@@ -975,8 +975,6 @@ extern void drm_crtc_arm_vblank_event(struct drm_crtc *crtc,
 				      struct drm_pending_vblank_event *e);
 extern bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe);
 extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc);
-extern int drm_vblank_get(struct drm_device *dev, unsigned int pipe);
-extern void drm_vblank_put(struct drm_device *dev, unsigned int pipe);
 extern int drm_crtc_vblank_get(struct drm_crtc *crtc);
 extern void drm_crtc_vblank_put(struct drm_crtc *crtc);
 extern void drm_wait_one_vblank(struct drm_device *dev, unsigned int pipe);