Revert "i915: restore only the mode of this driver on lastclose"

This reverts commit 0a0883c8.

this was in my tree by accident, I meant to rebase it out and
didn't realise in time.
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/i915/i915_dma.c

@@ -2207,7 +2207,7 @@ void i915_driver_lastclose(struct drm_device * dev)
 	drm_i915_private_t *dev_priv = dev->dev_private;
 
 	if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) {
-		intel_fb_restore_mode(dev);
+		drm_fb_helper_restore();
 		vga_switcheroo_process_delayed_switch();
 		return;
 	}

drivers/gpu/drm/i915/intel_drv.h

@@ -338,5 +338,4 @@ extern int intel_overlay_attrs(struct drm_device *dev, void *data,
 			       struct drm_file *file_priv);
 
 extern void intel_fb_output_poll_changed(struct drm_device *dev);
-extern void intel_fb_restore_mode(struct drm_device *dev);
 #endif /* __INTEL_DRV_H__ */

drivers/gpu/drm/i915/intel_fb.c

@@ -264,19 +264,3 @@ void intel_fb_output_poll_changed(struct drm_device *dev)
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
 }
-
-void intel_fb_restore_mode(struct drm_device *dev)
-{
-	drm_i915_private_t *dev_priv = dev->dev_private;
-	int ret, i;
-
-	if (!dev_priv->fbdev)
-		return;
-
-	for (i = 0; i < dev_priv->fbdev->helper.crtc_count; i++) {
-		struct drm_mode_set *mode_set = &dev_priv->fbdev->helper.crtc_info[i].mode_set;
-		ret = drm_crtc_helper_set_config(mode_set);
-		if (ret)
-			DRM_DEBUG("failed to restore crtc mode\n");
-	}
-}