Re: [Intel-gfx] [PATCH 1/3] drm/i915: Remove redundant check for DG1

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On Mon, Mar 06, 2023 at 12:49:52PM -0800, Lucas De Marchi wrote:
> dg1_gt_workarounds_init() is only ever called for DG1, so there is no
> point checking it again.
> 
> Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>

Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx>

> ---
>  drivers/gpu/drm/i915/gt/intel_workarounds.c | 12 +++---------
>  1 file changed, 3 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> index 32aa1647721a..eb6cc4867d67 100644
> --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> @@ -1472,21 +1472,15 @@ gen12_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
>  static void
>  dg1_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
>  {
> -	struct drm_i915_private *i915 = gt->i915;
> -
>  	gen12_gt_workarounds_init(gt, wal);
>  
>  	/* Wa_1409420604:dg1 */
> -	if (IS_DG1(i915))
> -		wa_mcr_write_or(wal,
> -				SUBSLICE_UNIT_LEVEL_CLKGATE2,
> -				CPSSUNIT_CLKGATE_DIS);
> +	wa_mcr_write_or(wal, SUBSLICE_UNIT_LEVEL_CLKGATE2,
> +			CPSSUNIT_CLKGATE_DIS);
>  
>  	/* Wa_1408615072:dg1 */
>  	/* Empirical testing shows this register is unaffected by engine reset. */
> -	if (IS_DG1(i915))
> -		wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE2,
> -			    VSUNIT_CLKGATE_DIS_TGL);
> +	wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE2, VSUNIT_CLKGATE_DIS_TGL);
>  }
>  
>  static void
> -- 
> 2.39.0
> 

-- 
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation



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