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

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>
This commit is contained in:
Chris Wilson 2016-07-13 18:34:44 +01:00
parent e7852a4b3a
commit 0b8c0e9c33
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_fbdev.c
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@ -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);