On Wed, Aug 03, 2016 at 02:33:35PM -0700, Rodrigo Vivi wrote:
> drm_crtc_vblank_get call the drm_vblank_prepare that will be used soon
> to control power saving states or anything else that needs a mutex
> before the vblank happens.
>
> local_irq_disable disables kernel preemption so we won't be a
drm_crtc_vblank_get call the drm_vblank_prepare that will be used soon
to control power saving states or anything else that needs a mutex
before the vblank happens.
local_irq_disable disables kernel preemption so we won't be able
to use mutex inside drm_crtc_vblank_get. For this reason we need
to
