drm/i915: don't capture DERRMR for VLV/CHV

DERRMR isn't valid for VLV/CHV. Don't capture it for them.

Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://lore.kernel.org/r/4563cc7eb567ac508b84717c3708a4e48aa8b7bb.1744630147.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c b/drivers/gpu/drm/i915/display/intel_display_irq.c
index f5dc050a63441868cf88f782bc8f45702d5af646..5d07b6a9e59e3882daffa8eae66113a7c8fb4f06 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display_irq.c
+++ b/drivers/gpu/drm/i915/display/intel_display_irq.c
@@ -2343,7 +2343,7 @@ intel_display_irq_snapshot_capture(struct intel_display *display)
        if (!snapshot)
                return NULL;
 
-       if (DISPLAY_VER(display) >= 6 && DISPLAY_VER(display) < 20)
+       if (DISPLAY_VER(display) >= 6 && DISPLAY_VER(display) < 20 && !HAS_GMCH(display))
                snapshot->derrmr = intel_de_read(display, DERRMR);
 
        return snapshot;