Re: [PATCH 04/12] drm/i915: Remove double wait_for_vblank on broadwell.

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On Thu, 2015-11-19 at 16:07 +0100, Maarten Lankhorst wrote:
> wait_vblank is already set in intel_plane_atomic_calc_changes
> for broadwell, waiting for a double vblank is overkill.
> 
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>

Reviewed-by: Ander Conselvan de Oliveira <conselvan2@xxxxxxxxx>

> ---
>  drivers/gpu/drm/i915/intel_display.c | 8 --------
>  1 file changed, 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index 5345ffcce51e..60f17bc5f0ce 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -4657,14 +4657,6 @@ intel_post_enable_primary(struct drm_crtc *crtc)
>  	int pipe = intel_crtc->pipe;
>  
>  	/*
> -	 * BDW signals flip done immediately if the plane
> -	 * is disabled, even if the plane enable is already
> -	 * armed to occur at the next vblank :(
> -	 */
> -	if (IS_BROADWELL(dev))
> -		intel_wait_for_vblank(dev, pipe);
> -
> -	/*
>  	 * FIXME IPS should be fine as long as one plane is
>  	 * enabled, but in practice it seems to have problems
>  	 * when going from primary only to sprite only and vice
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