--- zzzz-none-000/linux-4.19.183/arch/arm64/mm/dma-mapping.c	2021-03-24 10:07:39.000000000 +0000
+++ bcm63-7530ax-756/linux-4.19.183/arch/arm64/mm/dma-mapping.c	2023-06-28 08:54:18.000000000 +0000
@@ -901,3 +901,6 @@
 	}
 #endif
 }
+#if defined(CONFIG_BCM_KF_GLB_COHERENCY) 
+EXPORT_SYMBOL(arch_setup_dma_ops);
+#endif