[Intel-gfx] [PATCH] drm/i915: adjust ring->add_request to no longer pass back the seqno

[Daniel Vetter]

The seqno is now allocated ahead of calling ring->add_request, so this
is just unncessery and can be removed.

v2: Rebased on top of the changed fix patch.

Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/i915_gem.c         |    2 +-
 drivers/gpu/drm/i915/intel_ringbuffer.c |   24 +++++++-----------------
 drivers/gpu/drm/i915/intel_ringbuffer.h |    2 +-
 3 files changed, 9 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index dc8e45f..a72100c 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1682,7 +1682,7 @@ i915_add_request(struct intel_ring_buffer *ring,
 	BUG_ON(request == NULL);
 	seqno = i915_gem_next_request_seqno(ring);
 
-	ret = ring->add_request(ring, &seqno);
+	ret = ring->add_request(ring, seqno);
 	if (ret)
 	    return ret;
 
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 7a107c9..117004f 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -440,7 +440,7 @@ update_mboxes(struct intel_ring_buffer *ring,
  */
 static int
 gen6_add_request(struct intel_ring_buffer *ring,
-		 u32 *seqno)
+		 u32 seqno)
 {
 	u32 mbox1_reg;
 	u32 mbox2_reg;
@@ -453,13 +453,11 @@ gen6_add_request(struct intel_ring_buffer *ring,
 	mbox1_reg = ring->signal_mbox[0];
 	mbox2_reg = ring->signal_mbox[1];
 
-	*seqno = i915_gem_next_request_seqno(ring);
-
-	update_mboxes(ring, *seqno, mbox1_reg);
-	update_mboxes(ring, *seqno, mbox2_reg);
+	update_mboxes(ring, seqno, mbox1_reg);
+	update_mboxes(ring, seqno, mbox2_reg);
 	intel_ring_emit(ring, MI_STORE_DWORD_INDEX);
 	intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
-	intel_ring_emit(ring, *seqno);
+	intel_ring_emit(ring, seqno);
 	intel_ring_emit(ring, MI_USER_INTERRUPT);
 	intel_ring_advance(ring);
 
@@ -549,9 +547,8 @@ do {									\
 
 static int
 pc_render_add_request(struct intel_ring_buffer *ring,
-		      u32 *result)
+		      u32 seqno)
 {
-	u32 seqno = i915_gem_next_request_seqno(ring);
 	struct pipe_control *pc = ring->private;
 	u32 scratch_addr = pc->gtt_offset + 128;
 	int ret;
@@ -594,15 +591,13 @@ pc_render_add_request(struct intel_ring_buffer *ring,
 	intel_ring_emit(ring, 0);
 	intel_ring_advance(ring);
 
-	*result = seqno;
 	return 0;
 }
 
 static int
 render_ring_add_request(struct intel_ring_buffer *ring,
-			u32 *result)
+			u32 seqno)
 {
-	u32 seqno = i915_gem_next_request_seqno(ring);
 	int ret;
 
 	ret = intel_ring_begin(ring, 4);
@@ -615,7 +610,6 @@ render_ring_add_request(struct intel_ring_buffer *ring,
 	intel_ring_emit(ring, MI_USER_INTERRUPT);
 	intel_ring_advance(ring);
 
-	*result = seqno;
 	return 0;
 }
 
@@ -767,24 +761,20 @@ bsd_ring_flush(struct intel_ring_buffer *ring,
 
 static int
 ring_add_request(struct intel_ring_buffer *ring,
-		 u32 *result)
+		 u32 seqno)
 {
-	u32 seqno;
 	int ret;
 
 	ret = intel_ring_begin(ring, 4);
 	if (ret)
 		return ret;
 
-	seqno = i915_gem_next_request_seqno(ring);
-
 	intel_ring_emit(ring, MI_STORE_DWORD_INDEX);
 	intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 	intel_ring_emit(ring, seqno);
 	intel_ring_emit(ring, MI_USER_INTERRUPT);
 	intel_ring_advance(ring);
 
-	*result = seqno;
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 68281c9..1638f32 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -70,7 +70,7 @@ struct  intel_ring_buffer {
 				  u32	invalidate_domains,
 				  u32	flush_domains);
 	int		(*add_request)(struct intel_ring_buffer *ring,
-				       u32 *seqno);
+				       u32 seqno);
 	u32		(*get_seqno)(struct intel_ring_buffer *ring);
 	int		(*dispatch_execbuffer)(struct intel_ring_buffer *ring,
 					       u32 offset, u32 length);
-- 
1.7.7.5