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

[Jani Nikula]

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

Suggested-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_irq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c 
b/drivers/gpu/drm/i915/display/intel_display_irq.c
index f5dc050a6344..5d07b6a9e59e 100644
--- 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;
-- 
2.39.5