[PATCH v2 6/7] drm/i915: Add WARN_ON in intel_get_crtc_for_pipe()

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Add a WARN_ON for a disabled pipe in pipe_mask at
intel_get_crtc_for_pipe() function.

Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Anshuman Gupta <anshuman.gupta@xxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_display_types.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 359eaa6703a8..4c674a41ba8b 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1412,6 +1412,8 @@ intel_get_first_crtc(struct drm_i915_private *dev_priv)
 static inline struct intel_crtc *
 intel_get_crtc_for_pipe(struct drm_i915_private *dev_priv, enum pipe pipe)
 {
+	/* pipe_to_crtc_mapping may have hole on any of 3 display pipe system */
+	WARN_ON(!(INTEL_INFO(dev_priv)->pipe_mask & BIT(pipe)));
 	return dev_priv->pipe_to_crtc_mapping[pipe];
 }
 
-- 
2.24.0

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