drivers/block/xen-blkback/Makefile - third_party/kernel - Git at Google

 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_XEN_BLKDEV_BACKEND) := xen-blkback.o

 xen-blkback-y	:= blkback.o xenbus.o
	# SPDX-License-Identifier: GPL-2.0-only
	obj-$(CONFIG_XEN_BLKDEV_BACKEND) := xen-blkback.o

	xen-blkback-y := blkback.o xenbus.o