[Intel-gfx] [PATCH] drm/i915: Dump pipe config when intel_modeset_pipe_config fails.

[Daniel Vetter]

On Tue, May 03, 2016 at 10:30:38AM +0200, Maarten Lankhorst wrote:
> This makes it easier to debug issues like https://bugs.freedesktop.org/show_bug.cgi?id=93477
> 
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Cc: Chris Wilson <|chris at chris-wilson.co.uk>|
> ---
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index cd415143a493..339c79e6524f 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -13449,8 +13449,11 @@ static int intel_atomic_check(struct drm_device *dev,
>  			return ret;
>  
>  		ret = intel_modeset_pipe_config(crtc, pipe_config);
> -		if (ret)
> +		if (ret) {
> +			intel_dump_pipe_config(to_intel_crtc(crtc),
> +					       pipe_config, "[failed]");
>  			return ret;
> +		}

Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
>  
>  		if (i915.fastboot &&
>  		    intel_pipe_config_compare(dev,
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch