[PATCH] drm/exynos: fix kernel panic issue at drm releasing

[Inki Dae]

Hi Daniel,

2015년 12월 24일 22:32에 Daniel Stone 이(가) 쓴 글:
> Hi Inki,
> 
> On 24 December 2015 at 09:10, Inki Dae <inki.dae at samsung.com> wrote:
>> +void exynos_drm_crtc_cancel_page_flip(struct drm_crtc *crtc)
>> +{
>> +       struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
>> +       unsigned long flags;
>> +
>> +       spin_lock_irqsave(&crtc->dev->event_lock, flags);
>> +       exynos_crtc->event = NULL;
>> +       spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
>> +}
> 
> This will leak the event and event space; you should call
> event->base.destroy() here. With that fixed:

Right. we don't use exynos specific page flip function anymore which managed the event as a list so that the event objects can be freed by postclose callback.
Anyway, would it be better for event->base.destory() to be called between spin lock/unlock? 

Thanks,
Inki Dae

> Reviewed-by: Daniel Stone <daniels at collabora.com>
> 
> Cheers,
> Daniel
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