--- zzzz-none-000/linux-2.6.39.4/arch/x86/include/asm/swiotlb.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/arch/x86/include/asm/swiotlb.h	2021-11-10 13:38:14.000000000 +0000
@@ -27,6 +27,6 @@
 }
 #endif
 
-static inline void dma_mark_clean(void *addr, size_t size) {}
+static inline void dma_mark_clean(void *addr __attribute__((unused)), size_t size __attribute__((unused))) {}
 
 #endif /* _ASM_X86_SWIOTLB_H */