[Intel-gfx] [PATCH 4/6] drm/i915/dp_mst: Clear only the ACT sent flag from DP_TP_STATUS

[Ville Syrjälä]

On Tue, Jun 16, 2020 at 05:18:53PM +0300, Imre Deak wrote:
> It's not clear if the DP_TP_STATUS flags other than the ACT sent flag
> have some side-effect, so don't clear those; we don't depend on the
> state of these flags anyway.
> 
> Suggested-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Signed-off-by: Imre Deak <imre.deak at intel.com>

Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_dp_mst.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> index 3977ee4f7176..b66b56a070e5 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> @@ -322,7 +322,7 @@ static void clear_act_sent(struct intel_dp *intel_dp)
>  	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
>  
>  	intel_de_write(i915, intel_dp->regs.dp_tp_status,
> -		       intel_de_read(i915, intel_dp->regs.dp_tp_status));
> +		       DP_TP_STATUS_ACT_SENT);
>  }
>  
>  static void wait_for_act_sent(struct intel_dp *intel_dp)
> -- 
> 2.23.1

-- 
Ville Syrjälä
Intel