drm/i915/fbdev: Drain the suspend worker on retiring

ickle · ickle · commit 0b8c0e9c3354 · 2016-07-14T21:32:27.000+01:00
Since the suspend_work can arm itself if the console_lock() is currently held elsewhere, simply calling flush_work() doesn't guarantee that the work is idle upon return. To do so requires using cancel_work_sync(). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1468431285-28264-1-git-send-email-chris@chris-wilson.co.uk Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -768,7 +768,7 @@ void intel_fbdev_fini(struct drm_device *dev)
 	if (!ifbdev)
 		return;
 
-	flush_work(&dev_priv->fbdev_suspend_work);
+	cancel_work_sync(&dev_priv->fbdev_suspend_work);
 	if (!current_is_async())
 		intel_fbdev_sync(ifbdev);
 
