drm/i915: Rename drm_gem_object_unreference_unlocked in preparation for lockless free

Whilst this ultimately wraps kref_put_mutex(), our goal here is the
lockless variant, so keep the _unlocked() suffix until we need it no
more.

s/drm_gem_object_unreference_unlocked/i915_gem_object_put_unlocked/

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1469005202-9659-7-git-send-email-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1469017917-15134-6-git-send-email-chris@chris-wilson.co.uk
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index f23670f..536acd5 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -410,7 +410,7 @@
 
 	ret = drm_gem_handle_create(file, &obj->base, &handle);
 	/* drop reference from allocate - handle holds it now */
-	drm_gem_object_unreference_unlocked(&obj->base);
+	i915_gem_object_put_unlocked(obj);
 	if (ret)
 		return ret;
 
@@ -1604,7 +1604,7 @@
 	 * pages from.
 	 */
 	if (!obj->base.filp) {
-		drm_gem_object_unreference_unlocked(&obj->base);
+		i915_gem_object_put_unlocked(obj);
 		return -EINVAL;
 	}
 
@@ -1616,7 +1616,7 @@
 		struct vm_area_struct *vma;
 
 		if (down_write_killable(&mm->mmap_sem)) {
-			drm_gem_object_unreference_unlocked(&obj->base);
+			i915_gem_object_put_unlocked(obj);
 			return -EINTR;
 		}
 		vma = find_vma(mm, addr);
@@ -1630,7 +1630,7 @@
 		/* This may race, but that's ok, it only gets set */
 		WRITE_ONCE(obj->has_wc_mmap, true);
 	}
-	drm_gem_object_unreference_unlocked(&obj->base);
+	i915_gem_object_put_unlocked(obj);
 	if (IS_ERR((void *)addr))
 		return addr;
 
@@ -3615,7 +3615,7 @@
 		break;
 	}
 
-	drm_gem_object_unreference_unlocked(&obj->base);
+	i915_gem_object_put_unlocked(obj);
 	return 0;
 }