drm/vgem: switch to drm_*_get(), drm_*_put() helpers

Use drm_*_get() and drm_*_put() helpers instead of drm_*_reference()
and drm_*_unreference() helpers.

drm_*_reference() and drm_*_unreference() functions are just
compatibility alias for drm_*_get() and drm_*_put() and should not be
used by new code. So convert all users of compatibility functions to
use the new APIs.

Generated by: scripts/coccinelle/api/drm-get-put.cocci
Signed-off-by: Cihangir Akturk <cakturk@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1502454794-28558-26-git-send-email-cakturk@gmail.com

drivers/gpu/drm/vgem/vgem_drv.c

@@ -190,7 +190,7 @@ static struct drm_gem_object *vgem_gem_create(struct drm_device *dev,
 		return ERR_CAST(obj);
 
 	ret = drm_gem_handle_create(file, &obj->base, handle);
-	drm_gem_object_unreference_unlocked(&obj->base);
+	drm_gem_object_put_unlocked(&obj->base);
 	if (ret)
 		goto err;
 
@@ -245,7 +245,7 @@ static int vgem_gem_dumb_map(struct drm_file *file, struct drm_device *dev,
 
 	*offset = drm_vma_node_offset_addr(&obj->vma_node);
 unref:
-	drm_gem_object_unreference_unlocked(obj);
+	drm_gem_object_put_unlocked(obj);
 
 	return ret;
 }

drivers/gpu/drm/vgem/vgem_fence.c

@@ -213,7 +213,7 @@ int vgem_fence_attach_ioctl(struct drm_device *dev,
 		dma_fence_put(fence);
 	}
 err:
-	drm_gem_object_unreference_unlocked(obj);
+	drm_gem_object_put_unlocked(obj);
 	return ret;
 }