From: Ville Syrjälä ville.syrjala@linux.intel.com
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 --- drivers/gpu/drm/i915/intel_display.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 4cca155376be..7bdbe4b03591 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -13523,7 +13523,7 @@ static void intel_atomic_wait_for_vblanks(struct drm_device *dev, drm_crtc_vblank_count(crtc), msecs_to_jiffies(50));
- WARN_ON(!lret); + WARN(!lret, "pipe %c vblank wait timed out\n", pipe_name(pipe));
drm_crtc_vblank_put(crtc); }