drm/i915: Remove i915_gem_object_to_ggtt()

With the last user of this convenience wrapper gone, we can kill the
wrapper and in the process make the lookup function static.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170116152131.18089-5-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drivers/gpu/drm/i915/i915_drv.h

@@ -3380,13 +3380,6 @@ i915_vm_to_ppgtt(struct i915_address_space *vm)
 	return container_of(vm, struct i915_hw_ppgtt, base);
 }
 
-static inline struct i915_vma *
-i915_gem_object_to_ggtt(struct drm_i915_gem_object *obj,
-			const struct i915_ggtt_view *view)
-{
-	return i915_vma_lookup(obj, &to_i915(obj->base.dev)->ggtt.base, view);
-}
-
 /* i915_gem_fence_reg.c */
 int __must_check i915_vma_get_fence(struct i915_vma *vma);
 int __must_check i915_vma_put_fence(struct i915_vma *vma);

drivers/gpu/drm/i915/i915_vma.c

@@ -144,28 +144,13 @@ vma_create(struct drm_i915_gem_object *obj,
 	return vma;
 }
 
-/**
- * i915_vma_lookup - finds a matching VMA
- * @obj: parent &struct drm_i915_gem_object to be mapped
- * @vm: address space in which the mapping is located
- * @view: additional mapping requirements
- *
- * i915_vma_lookup() looks up an existing VMA of the @obj in the @vm with
- * the same @view characteristics.
- *
- * Must be called with struct_mutex held.
- *
- * Returns the vma if found, or NULL.
- */
-struct i915_vma *
-i915_vma_lookup(struct drm_i915_gem_object *obj,
-		struct i915_address_space *vm,
-		const struct i915_ggtt_view *view)
+static struct i915_vma *
+vma_lookup(struct drm_i915_gem_object *obj,
+	   struct i915_address_space *vm,
+	   const struct i915_ggtt_view *view)
 {
 	struct rb_node *rb;
 
-	lockdep_assert_held(&obj->base.dev->struct_mutex);
-
 	rb = obj->vma_tree.rb_node;
 	while (rb) {
 		struct i915_vma *vma = rb_entry(rb, struct i915_vma, obj_node);
@@ -210,13 +195,13 @@ i915_vma_instance(struct drm_i915_gem_object *obj,
 	GEM_BUG_ON(view && !i915_is_ggtt(vm));
 	GEM_BUG_ON(vm->closed);
 
-	vma = i915_vma_lookup(obj, vm, view);
+	vma = vma_lookup(obj, vm, view);
 	if (!vma)
 		vma = vma_create(obj, vm, view);
 
 	GEM_BUG_ON(!IS_ERR(vma) && i915_vma_is_closed(vma));
 	GEM_BUG_ON(!IS_ERR(vma) && i915_vma_compare(vma, vm, view));
-	GEM_BUG_ON(!IS_ERR(vma) && i915_vma_lookup(obj, vm, view) != vma);
+	GEM_BUG_ON(!IS_ERR(vma) && vma_lookup(obj, vm, view) != vma);
 	return vma;
 }
 

drivers/gpu/drm/i915/i915_vma.h

@@ -111,11 +111,6 @@ struct i915_vma {
 	struct drm_i915_gem_exec_object2 *exec_entry;
 };
 
-struct i915_vma *
-i915_vma_lookup(struct drm_i915_gem_object *obj,
-		struct i915_address_space *vm,
-		const struct i915_ggtt_view *view);
-
 struct i915_vma *
 i915_vma_instance(struct drm_i915_gem_object *obj,
 		  struct i915_address_space *vm,