drm/i915: Don't WARN about ring idle bit on gen2

vsyrjala · danvet · commit de8f0a5016c8 · 2014-06-05T08:52:41.000+02:00
Gen2 doesn't have the ring idle/stop bits in the SCPD/MI_MODE register,
so don't go spewing warnings about the state of those bits.

Signed-off-by: Ville Syrjälä &lt;ville.syrjala@linux.intel.com&gt;
Reviewed-by: Chris Wilson &lt;chris@chris-wilson.co.uk&gt;
Signed-off-by: Daniel Vetter &lt;daniel.vetter@ffwll.ch&gt;
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1494,7 +1494,7 @@ void intel_cleanup_ring_buffer(struct intel_engine_cs *ring)
 		return;
 
 	intel_stop_ring_buffer(ring);
-	WARN_ON((I915_READ_MODE(ring) & MODE_IDLE) == 0);
+	WARN_ON(!IS_GEN2(ring->dev) && (I915_READ_MODE(ring) & MODE_IDLE) == 0);
 
 	iounmap(ringbuf->virtual_start);
 
