Re: [PATCH 3/3] drm/i915: Remove dead update_wm_pre assignment from SKL wm code

[Rodrigo Vivi <rodrigo.vivi@intel.com>]

On Tue, Nov 13, 2018 at 07:23:30PM +0200, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> SKL+ do not use crtc_state->update_wm_pre, so there is absolutely no
> point it setting it. crtc_state->update_wm_pre only exists as a
> temporary hack for pre-g4x platforms until we redo their
> watermarks to be be atomic.
> 
> Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

> ---
>  drivers/gpu/drm/i915/intel_pm.c | 6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 5d823bdc63a9..9801412062cc 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -5473,12 +5473,6 @@ skl_compute_wm(struct drm_atomic_state *state)
>  
>  		if (changed)
>  			results->dirty_pipes |= drm_crtc_mask(crtc);
> -
> -		if ((results->dirty_pipes & drm_crtc_mask(crtc)) == 0)
> -			/* This pipe's WM's did not change */
> -			continue;
> -
> -		intel_cstate->update_wm_pre = true;
>  	}
>  
>  	skl_print_wm_changes(state);
> -- 
> 2.18.1
> 
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