[Intel-gfx] [PATCH v3 2/5] drm/i915/wm: warn about ilk_wm_sanitize() on display ver 9+

[Jani Nikula]

The sanitization should be limited to PCH split platforms up to display
version 8. Warn and bail out otherwise.

Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/display/i9xx_wm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/i9xx_wm.c b/drivers/gpu/drm/i915/display/i9xx_wm.c
index f76ac64ebd71..50cdfe11192e 100644
--- a/drivers/gpu/drm/i915/display/i9xx_wm.c
+++ b/drivers/gpu/drm/i915/display/i9xx_wm.c
@@ -3437,6 +3437,9 @@ void ilk_wm_sanitize(struct drm_i915_private *dev_priv)
 	if (!dev_priv->display.funcs.wm->optimize_watermarks)
 		return;
 
+	if (drm_WARN_ON(&dev_priv->drm, DISPLAY_VER(dev_priv) >= 9))
+		return;
+
 	state = drm_atomic_state_alloc(&dev_priv->drm);
 	if (drm_WARN_ON(&dev_priv->drm, !state))
 		return;
-- 
2.34.1