drm/i915: s/intel_ring_buffer/intel_engine_cs

In the upcoming patches we plan to break the correlation between
engine command streamers (a.k.a. rings) and ringbuffers, so it
makes sense to refactor the code and make the change obvious.

No functional changes.

Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6db85e2..90f4f05 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2159,7 +2159,7 @@
 int
 intel_pin_and_fence_fb_obj(struct drm_device *dev,
 			   struct drm_i915_gem_object *obj,
-			   struct intel_ring_buffer *pipelined)
+			   struct intel_engine_cs *pipelined)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 alignment;
@@ -8756,7 +8756,7 @@
 }
 
 void intel_mark_fb_busy(struct drm_i915_gem_object *obj,
-			struct intel_ring_buffer *ring)
+			struct intel_engine_cs *ring)
 {
 	struct drm_device *dev = obj->base.dev;
 	struct drm_crtc *crtc;
@@ -8951,7 +8951,7 @@
 				 struct drm_crtc *crtc,
 				 struct drm_framebuffer *fb,
 				 struct drm_i915_gem_object *obj,
-				 struct intel_ring_buffer *ring,
+				 struct intel_engine_cs *ring,
 				 uint32_t flags)
 {
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
@@ -8986,7 +8986,7 @@
 				 struct drm_crtc *crtc,
 				 struct drm_framebuffer *fb,
 				 struct drm_i915_gem_object *obj,
-				 struct intel_ring_buffer *ring,
+				 struct intel_engine_cs *ring,
 				 uint32_t flags)
 {
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
@@ -9018,7 +9018,7 @@
 				 struct drm_crtc *crtc,
 				 struct drm_framebuffer *fb,
 				 struct drm_i915_gem_object *obj,
-				 struct intel_ring_buffer *ring,
+				 struct intel_engine_cs *ring,
 				 uint32_t flags)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
@@ -9057,7 +9057,7 @@
 				 struct drm_crtc *crtc,
 				 struct drm_framebuffer *fb,
 				 struct drm_i915_gem_object *obj,
-				 struct intel_ring_buffer *ring,
+				 struct intel_engine_cs *ring,
 				 uint32_t flags)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
@@ -9093,7 +9093,7 @@
 				 struct drm_crtc *crtc,
 				 struct drm_framebuffer *fb,
 				 struct drm_i915_gem_object *obj,
-				 struct intel_ring_buffer *ring,
+				 struct intel_engine_cs *ring,
 				 uint32_t flags)
 {
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
@@ -9188,7 +9188,7 @@
 				    struct drm_crtc *crtc,
 				    struct drm_framebuffer *fb,
 				    struct drm_i915_gem_object *obj,
-				    struct intel_ring_buffer *ring,
+				    struct intel_engine_cs *ring,
 				    uint32_t flags)
 {
 	return -ENODEV;
@@ -9205,7 +9205,7 @@
 	struct drm_i915_gem_object *obj = to_intel_framebuffer(fb)->obj;
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 	struct intel_unpin_work *work;
-	struct intel_ring_buffer *ring;
+	struct intel_engine_cs *ring;
 	unsigned long flags;
 	int ret;