drm/i915: Use FBINFO_STATE defines instead of 0 and 1

This makes, arguably, the condition on state easier to read.
Suggested-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NDamien Lespiau <damien.lespiau@intel.com>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.c

@@ -546,7 +546,7 @@ static int i915_drm_freeze(struct drm_device *dev)
 	intel_opregion_fini(dev);
 
 	console_lock();
-	intel_fbdev_set_suspend(dev, 1);
+	intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED);
 	console_unlock();
 
 	return 0;
@@ -590,7 +590,7 @@ void intel_console_resume(struct work_struct *work)
 	struct drm_device *dev = dev_priv->dev;
 
 	console_lock();
-	intel_fbdev_set_suspend(dev, 0);
+	intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING);
 	console_unlock();
 }
 
@@ -659,7 +659,7 @@ static int __i915_drm_thaw(struct drm_device *dev)
 	 * path of resume if possible.
 	 */
 	if (console_trylock()) {
-		intel_fbdev_set_suspend(dev, 0);
+		intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING);
 		console_unlock();
 	} else {
 		schedule_work(&dev_priv->console_resume_work);

drivers/gpu/drm/i915/intel_fb.c

@@ -275,7 +275,7 @@ void intel_fbdev_set_suspend(struct drm_device *dev, int state)
 	 * been restored from swap. If the object is stolen however, it will be
 	 * full of whatever garbage was left in there.
 	 */
-	if (!state && ifbdev->ifb.obj->stolen)
+	if (state == FBINFO_STATE_RUNNING && ifbdev->ifb.obj->stolen)
 		memset_io(info->screen_base, 0, info->screen_size);
 
 	fb_set_suspend(info, state);