--- zzzz-none-000/linux-4.1.38/include/asm-generic/io.h	2017-01-18 18:48:06.000000000 +0000
+++ bcm63-7582-715/linux-4.1.38/include/asm-generic/io.h	2020-11-25 10:06:48.000000000 +0000
@@ -825,7 +825,7 @@
 
 #ifndef unxlate_dev_mem_ptr
 #define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
-static inline void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr)
+static inline void unxlate_dev_mem_ptr(phys_addr_t phys __maybe_unused, void *addr __maybe_unused)
 {
 }
 #endif