--- zzzz-none-000/linux-4.1.52/include/linux/dma-attrs.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/include/linux/dma-attrs.h	2022-03-02 11:37:13.000000000 +0000
@@ -68,11 +68,11 @@
 	return test_bit(attr, attrs->flags);
 }
 #else /* !CONFIG_HAVE_DMA_ATTRS */
-static inline void dma_set_attr(enum dma_attr attr, struct dma_attrs *attrs)
+static inline void dma_set_attr(enum dma_attr attr __maybe_unused, struct dma_attrs *attrs __maybe_unused)
 {
 }
 
-static inline int dma_get_attr(enum dma_attr attr, struct dma_attrs *attrs)
+static inline int dma_get_attr(enum dma_attr attr __maybe_unused, struct dma_attrs *attrs __maybe_unused)
 {
 	return 0;
 }