[Intel-gfx] [PATCH 2/2] drm/i915: add MISSING_CASE to a few port/aux power domain helpers

[Ville Syrjälä]

On Wed, Nov 18, 2015 at 03:57:25PM +0200, Imre Deak wrote:
> MISSING_CASE() would have been useful to track down a recent problem in
> intel_display_port_aux_power_domain(), so add it there and a few related
> helpers. This was also suggested by Ville in his review of the latest
> DMC/DC changes, we forgot to address that.
> 
> Signed-off-by: Imre Deak <imre.deak at intel.com>

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

> ---
>  drivers/gpu/drm/i915/intel_display.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index cdc1761..b3d0557 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -5166,7 +5166,7 @@ static enum intel_display_power_domain port_to_power_domain(enum port port)
>  	case PORT_E:
>  		return POWER_DOMAIN_PORT_DDI_E_LANES;
>  	default:
> -		WARN_ON_ONCE(1);
> +		MISSING_CASE(port);
>  		return POWER_DOMAIN_PORT_OTHER;
>  	}
>  }
> @@ -5186,7 +5186,7 @@ static enum intel_display_power_domain port_to_aux_power_domain(enum port port)
>  		/* FIXME: Check VBT for actual wiring of PORT E */
>  		return POWER_DOMAIN_AUX_D;
>  	default:
> -		WARN_ON_ONCE(1);
> +		MISSING_CASE(port);
>  		return POWER_DOMAIN_AUX_A;
>  	}
>  }
> @@ -5247,7 +5247,7 @@ intel_display_port_aux_power_domain(struct intel_encoder *intel_encoder)
>  		intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
>  		return port_to_aux_power_domain(intel_dig_port->port);
>  	default:
> -		WARN_ON_ONCE(1);
> +		MISSING_CASE(intel_encoder->type);
>  		return POWER_DOMAIN_AUX_A;
>  	}
>  }
> -- 
> 2.5.0

-- 
Ville Syrjälä
Intel OTC