drm/i915: Remove use of runtime pm in atomic commit functions

We needed this originally for updating pagetables in plane commit
functions. But that's extracted into prepare/cleanup now. The other
issue was running updates when the pipe was off. That's also now
fixed.
Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_display.c

@@ -13639,14 +13639,11 @@ intel_disable_primary_plane(struct drm_plane *plane,
 static void intel_begin_crtc_commit(struct drm_crtc *crtc)
 {
 	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 
 	if (intel_crtc->atomic.update_wm_pre)
 		intel_update_watermarks(crtc);
 
-	intel_runtime_pm_get(dev_priv);
-
 	/* Perform vblank evasion around commit operation */
 	if (crtc->state->active)
 		intel_crtc->atomic.evade =
@@ -13659,15 +13656,11 @@ static void intel_begin_crtc_commit(struct drm_crtc *crtc)
 
 static void intel_finish_crtc_commit(struct drm_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 
 	if (intel_crtc->atomic.evade)
 		intel_pipe_update_end(intel_crtc,
 				      intel_crtc->atomic.start_vbl_count);
-
-	intel_runtime_pm_put(dev_priv);
 }
 
 /**