[Intel-gfx] [PATCH] drm/i915: debug sink dpms aux errors also on enable

[Daniel Vetter]

On Tue, Sep 02, 2014 at 04:33:52PM +0300, Jani Nikula wrote:
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>

Queued for -next, thanks for the patch.
-Daniel

> ---
>  drivers/gpu/drm/i915/intel_dp.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index d7fc2c0e9ba8..f112d7d2f8bd 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -1553,8 +1553,6 @@ void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode)
>  	if (mode != DRM_MODE_DPMS_ON) {
>  		ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER,
>  					 DP_SET_POWER_D3);
> -		if (ret != 1)
> -			DRM_DEBUG_DRIVER("failed to write sink power state\n");
>  	} else {
>  		/*
>  		 * When turning on, we need to retry for 1ms to give the sink
> @@ -1568,6 +1566,10 @@ void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode)
>  			msleep(1);
>  		}
>  	}
> +
> +	if (ret != 1)
> +		DRM_DEBUG_KMS("failed to %s sink power state\n",
> +			      mode == DRM_MODE_DPMS_ON ? "enable" : "disable");
>  }
>  
>  static bool intel_dp_get_hw_state(struct intel_encoder *encoder,
> -- 
> 1.9.1
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch