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

[Maarten Lankhorst]

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;
+		}
 
 		if (i915.fastboot &&
 		    intel_pipe_config_compare(dev,