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drm: Cancel drm_fb_helper_resume_work on unload 

We can not allow the worker to run after its fbdev, or even the module,
has been removed.

Fixes: cfe63423d9 ("drm/fb-helper: Add drm_fb_helper_set_suspend_unlocked()")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v4.9+
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170207124956.14954-2-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2017-02-07 12:49:56 +00:00 committed by Daniel Vetter
parent f21b9a92ca
commit 24f76b2c87
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/drm_fb_helper.c
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@ -860,6 +860,7 @@ void drm_fb_helper_fini(struct drm_fb_helper *fb_helper)
if (!drm_fbdev_emulation)
return;
cancel_work_sync(&fb_helper->resume_work);
cancel_work_sync(&fb_helper->dirty_work);
mutex_lock(&kernel_fb_helper_lock);