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

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 <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 3379722..279488a 100644 (file)
--- 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);