From: Ville Syrj?l? <ville.syrjala at linux.intel.com> WARN_ON(!spin_is_locked()) is not a good idea on a UP system w/o spinlock debugging. Use WARN_ON_SMP() instead. Signed-off-by: Ville Syrj?l? <ville.syrjala at linux.intel.com> --- drivers/gpu/drm/i915/intel_panel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index 56f17b2..80bea1d 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -332,7 +332,7 @@ static u32 i915_read_blc_pwm_ctl(struct drm_device *dev) struct drm_i915_private *dev_priv = dev->dev_private; u32 val; - WARN_ON(!spin_is_locked(&dev_priv->backlight.lock)); + WARN_ON_SMP(!spin_is_locked(&dev_priv->backlight.lock)); /* Restore the CTL value if it lost, e.g. GPU reset */ -- 1.8.1.5
