[Intel-gfx] [RFC 07/44] drm/i915: Disable 'get seqno' workaround for VLV

[John.C.Harrison at Intel.com]

From: John Harrison <John.C.Harrison at Intel.com>

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