From: John Harrison <[email protected]>
There is a workaround for a hardware bug when reading the seqno from the status
page. The bug does not exist on VLV however, the workaround was still being
applied.
---
drivers/gpu/drm/i915/intel_ringbuffer.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c
b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 279488a..bad5db0 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1960,7 +1960,10 @@ int intel_init_render_ring_buffer(struct drm_device *dev)
ring->irq_put = gen6_ring_put_irq;
}
ring->irq_enable_mask = GT_RENDER_USER_INTERRUPT;
- ring->get_seqno = gen6_ring_get_seqno;
+ if (IS_VALLEYVIEW(dev))
+ ring->get_seqno = ring_get_seqno;
+ else
+ ring->get_seqno = gen6_ring_get_seqno;
ring->set_seqno = ring_set_seqno;
ring->semaphore.sync_to = gen6_ring_sync;
ring->semaphore.signal = gen6_signal;
--
1.7.9.5
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