drm/i915: kill waiting_seqno

The waiting_seqno is not terribly useful, and as such we can remove it
so that we'll be able to extract lockless code.

v2: Keep the information for error_state (Chris)
Check if ring is initialized in hangcheck (Chris)
Capture the waiting ring (Chris)

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: add some bikeshed to clarify a comment.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index e0b25bb2fb5d..d3bf2595589f 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -60,7 +60,6 @@ struct  intel_ring_buffer {
         u32             irq_enable_mask;        /* bitmask to enable ring interrupt */
         u32             irq_seqno;              /* last seq seem at irq time */
         u32             trace_irq_seqno;
-        u32             waiting_seqno;
         u32             sync_seqno[I915_NUM_RINGS-1];
         bool __must_check (*irq_get)(struct intel_ring_buffer *ring);
         void            (*irq_put)(struct intel_ring_buffer *ring);