commit 64c58f2c48da85223f0db438fe4854bc3ef24353
author Oscar Mateo <oscar.mateo@intel.com> Thu Jul 03 16:28:03 2014 +0100
committer Daniel Vetter <daniel.vetter@ffwll.ch> Tue Jul 08 12:30:57 2014 +0200
tree 3f25343d4f927f3d5c0ce885049f065cbc9bf173
parent 2919d2913c515fcfef6d50a46aae31128d454ce9

drm/i915: Generalize ring_space to take a ringbuf

It's simple enough that it doesn't need to know anything about the
engine.

Trivial change.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_ringbuffer.c

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 40b17f2..738140c 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -48,9 +48,8 @@
 	return space;
 }
 
-static inline int ring_space(struct intel_engine_cs *ring)
+static inline int ring_space(struct intel_ringbuffer *ringbuf)
 {
-	struct intel_ringbuffer *ringbuf = ring->buffer;
 	return __ring_space(ringbuf->head & HEAD_ADDR, ringbuf->tail, ringbuf->size);
 }
 
@@ -545,7 +544,7 @@
 	else {
 		ringbuf->head = I915_READ_HEAD(ring);
 		ringbuf->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
-		ringbuf->space = ring_space(ring);
+		ringbuf->space = ring_space(ringbuf);
 		ringbuf->last_retired_head = -1;
 	}
 
@@ -1639,7 +1638,7 @@
 		ringbuf->head = ringbuf->last_retired_head;
 		ringbuf->last_retired_head = -1;
 
-		ringbuf->space = ring_space(ring);
+		ringbuf->space = ring_space(ringbuf);
 		if (ringbuf->space >= n)
 			return 0;
 	}
@@ -1662,7 +1661,7 @@
 	ringbuf->head = ringbuf->last_retired_head;
 	ringbuf->last_retired_head = -1;
 
-	ringbuf->space = ring_space(ring);
+	ringbuf->space = ring_space(ringbuf);
 	return 0;
 }
 
@@ -1691,7 +1690,7 @@
 	trace_i915_ring_wait_begin(ring);
 	do {
 		ringbuf->head = I915_READ_HEAD(ring);
-		ringbuf->space = ring_space(ring);
+		ringbuf->space = ring_space(ringbuf);
 		if (ringbuf->space >= n) {
 			ret = 0;
 			break;
@@ -1743,7 +1742,7 @@
 		iowrite32(MI_NOOP, virt++);
 
 	ringbuf->tail = 0;
-	ringbuf->space = ring_space(ring);
+	ringbuf->space = ring_space(ringbuf);
 
 	return 0;
 }