[PATCH] drm: Assert correct locking for drm_send_vblank_event

[Chris Wilson]

On Fri, Sep 12, 2014 at 03:40:56PM +0200, Daniel Vetter wrote:
> The comment says that the caller must hold the dev->event_lock
> spinlock, so let's enforce this.
> 
> A quick audit over all driver shows that except for the one place in
> i915 which motivated this all callers fullfill this requirement
> already.

Replace the rogue WARN_ON_SMP(!spin_is_locked(&dev->event_lock)) in
send_vblank_event() as well then.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre