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drm/i915: Replace nondescript 'WARN_ON(!lret)' with a sensible error message

When a vblank wait times out in intel_atomic_wait_for_vblanks() we just
get a cryptic 'WARN_ON(!ret)' backtrace in dmesg. Repace it with
something that tells you what actually happened.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460978973-24945-1-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Ville Syrjälä 9 年之前
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共有 1 個文件被更改,包括 1 次插入1 次删除
  1. 1 1
      drivers/gpu/drm/i915/intel_display.c

+ 1 - 1
drivers/gpu/drm/i915/intel_display.c

@@ -13526,7 +13526,7 @@ static void intel_atomic_wait_for_vblanks(struct drm_device *dev,
 					drm_crtc_vblank_count(crtc),
 					drm_crtc_vblank_count(crtc),
 				msecs_to_jiffies(50));
 				msecs_to_jiffies(50));
 
 
-		WARN_ON(!lret);
+		WARN(!lret, "pipe %c vblank wait timed out\n", pipe_name(pipe));
 
 
 		drm_crtc_vblank_put(crtc);
 		drm_crtc_vblank_put(crtc);
 	}
 	}