--- zzzz-none-000/linux-4.9.218/drivers/dma-buf/Makefile	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ax-750/linux-4.9.218/drivers/dma-buf/Makefile	2023-03-29 10:59:06.000000000 +0000
@@ -1,3 +1,7 @@
-obj-y := dma-buf.o fence.o reservation.o seqno-fence.o fence-array.o
-obj-$(CONFIG_SYNC_FILE)		+= sync_file.o
-obj-$(CONFIG_SW_SYNC)		+= sw_sync.o sync_debug.o
+obj-$(CONFIG_DMA_SHARED_BUFFER) := dma-shared-buffer.o
+
+dma-buf-objs-y := dma-buf.o fence.o reservation.o seqno-fence.o fence-array.o
+dma-buf-objs-$(CONFIG_SYNC_FILE)		+= sync_file.o
+dma-buf-objs-$(CONFIG_SW_SYNC)		+= sw_sync.o sync_debug.o
+
+dma-shared-buffer-objs :=  $(dma-buf-objs-y)