[PATCH 2/2] drm: Cancel drm_fb_helper_resume_work on unload

[Daniel Vetter]

On Tue, Feb 07, 2017 at 12:49:56PM +0000, Chris Wilson wrote:
> We can not allow the worker to run after its fbdev, or even the module,
> has been removed.
> 
> Fixes: cfe63423d9be ("drm/fb-helper: Add drm_fb_helper_set_suspend_unlocked()")
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Noralf Trønnes <noralf at tronnes.org>
> Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> Cc: Jani Nikula <jani.nikula at linux.intel.com>
> Cc: Sean Paul <seanpaul at chromium.org>
> Cc: dri-devel at lists.freedesktop.org
> Cc: <stable at vger.kernel.org> # v4.9+

Both applied to drm-misc-next-fixes (since imo not that pressing that we
need to rush them in for 4.10 ...).
-Daniel

> ---
>  drivers/gpu/drm/drm_fb_helper.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
> index 2d0810c9f3dc..842c461b0b21 100644
> --- a/drivers/gpu/drm/drm_fb_helper.c
> +++ b/drivers/gpu/drm/drm_fb_helper.c
> @@ -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);
> -- 
> 2.11.0
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch