[PATCH 09/12] drm/irq: Lack of interrupt support in drm_vblank_on|off

[Thierry Reding]

On Wed, May 14, 2014 at 08:51:12PM +0200, Daniel Vetter wrote:
> If we want to use this functionality in generic helpers to make
> sure that all drivers have somewhat sane vblank handling across
> modesets/dpms, we need to make it work for all drivers. But some
> don't support interrupts and hence also not vblank waits.
> 
> Just return early on such drivers.
> 
> Note that with pageflips drivers are free to implement them however
> they wish to.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
>  drivers/gpu/drm/drm_irq.c | 6 ++++++
>  1 file changed, 6 insertions(+)

Reviewed-by: Thierry Reding <treding at nvidia.com>
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