drm/i915: Don't kick-off hangcheck after a DRI interrupt

Hangcheck and error recovery is only used by GEM.

Reported-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index b8e509a..f0c87bd 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -348,8 +348,12 @@ static void notify_ring(struct drm_device *dev,
                        struct intel_ring_buffer *ring)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
-       u32 seqno = ring->get_seqno(ring);
+       u32 seqno;
+
+       if (ring->obj == NULL)
+               return;
 
+       seqno = ring->get_seqno(ring);
        trace_i915_gem_request_complete(dev, seqno);
 
        ring->irq_seqno = seqno;