[Patch 0/1]drm_irq: Introducing the irq_thread support

[Liu, Chuansheng]

> For a kms drm driver (and tbh, doing a non-kms driver today is not a great 
> idea),
> there's no reason to use the drm_irq_install/_unistall helpers.
> 
Can not understand well, I found many GPU drivers are using drm_irq helpers' 
function, including ours:)