--- zzzz-none-000/linux-4.1.52/include/linux/dma-debug.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/include/linux/dma-debug.h	2022-03-02 11:37:13.000000000 +0000
@@ -89,103 +89,103 @@
 
 #else /* CONFIG_DMA_API_DEBUG */
 
-static inline void dma_debug_add_bus(struct bus_type *bus)
+static inline void dma_debug_add_bus(struct bus_type *bus __maybe_unused)
 {
 }
 
-static inline void dma_debug_init(u32 num_entries)
+static inline void dma_debug_init(u32 num_entries __maybe_unused)
 {
 }
 
-static inline int dma_debug_resize_entries(u32 num_entries)
+static inline int dma_debug_resize_entries(u32 num_entries __maybe_unused)
 {
 	return 0;
 }
 
-static inline void debug_dma_map_page(struct device *dev, struct page *page,
-				      size_t offset, size_t size,
-				      int direction, dma_addr_t dma_addr,
-				      bool map_single)
+static inline void debug_dma_map_page(struct device *dev __maybe_unused, struct page *page __maybe_unused,
+				      size_t offset __maybe_unused, size_t size __maybe_unused,
+				      int direction __maybe_unused, dma_addr_t dma_addr __maybe_unused,
+				      bool map_single __maybe_unused)
 {
 }
 
-static inline void debug_dma_mapping_error(struct device *dev,
-					  dma_addr_t dma_addr)
+static inline void debug_dma_mapping_error(struct device *dev __maybe_unused,
+					  dma_addr_t dma_addr __maybe_unused)
 {
 }
 
-static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
-					size_t size, int direction,
-					bool map_single)
+static inline void debug_dma_unmap_page(struct device *dev __maybe_unused, dma_addr_t addr __maybe_unused,
+					size_t size __maybe_unused, int direction __maybe_unused,
+					bool map_single __maybe_unused)
 {
 }
 
-static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
-				    int nents, int mapped_ents, int direction)
+static inline void debug_dma_map_sg(struct device *dev __maybe_unused, struct scatterlist *sg __maybe_unused,
+				    int nents __maybe_unused, int mapped_ents __maybe_unused, int direction __maybe_unused)
 {
 }
 
-static inline void debug_dma_unmap_sg(struct device *dev,
-				      struct scatterlist *sglist,
-				      int nelems, int dir)
+static inline void debug_dma_unmap_sg(struct device *dev __maybe_unused,
+				      struct scatterlist *sglist __maybe_unused,
+				      int nelems __maybe_unused, int dir __maybe_unused)
 {
 }
 
-static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
-					    dma_addr_t dma_addr, void *virt)
+static inline void debug_dma_alloc_coherent(struct device *dev __maybe_unused, size_t size __maybe_unused,
+					    dma_addr_t dma_addr __maybe_unused, void *virt __maybe_unused)
 {
 }
 
-static inline void debug_dma_free_coherent(struct device *dev, size_t size,
-					   void *virt, dma_addr_t addr)
+static inline void debug_dma_free_coherent(struct device *dev __maybe_unused, size_t size __maybe_unused,
+					   void *virt __maybe_unused, dma_addr_t addr __maybe_unused)
 {
 }
 
-static inline void debug_dma_sync_single_for_cpu(struct device *dev,
-						 dma_addr_t dma_handle,
-						 size_t size, int direction)
+static inline void debug_dma_sync_single_for_cpu(struct device *dev __maybe_unused,
+						 dma_addr_t dma_handle __maybe_unused,
+						 size_t size __maybe_unused, int direction __maybe_unused)
 {
 }
 
-static inline void debug_dma_sync_single_for_device(struct device *dev,
-						    dma_addr_t dma_handle,
-						    size_t size, int direction)
+static inline void debug_dma_sync_single_for_device(struct device *dev __maybe_unused,
+						    dma_addr_t dma_handle __maybe_unused,
+						    size_t size __maybe_unused, int direction __maybe_unused)
 {
 }
 
-static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
-						       dma_addr_t dma_handle,
-						       unsigned long offset,
-						       size_t size,
-						       int direction)
+static inline void debug_dma_sync_single_range_for_cpu(struct device *dev __maybe_unused,
+						       dma_addr_t dma_handle __maybe_unused,
+						       unsigned long offset __maybe_unused,
+						       size_t size __maybe_unused,
+						       int direction __maybe_unused)
 {
 }
 
-static inline void debug_dma_sync_single_range_for_device(struct device *dev,
-							  dma_addr_t dma_handle,
-							  unsigned long offset,
-							  size_t size,
-							  int direction)
+static inline void debug_dma_sync_single_range_for_device(struct device *dev __maybe_unused,
+							  dma_addr_t dma_handle __maybe_unused,
+							  unsigned long offset __maybe_unused,
+							  size_t size __maybe_unused,
+							  int direction __maybe_unused)
 {
 }
 
-static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
-					     struct scatterlist *sg,
-					     int nelems, int direction)
+static inline void debug_dma_sync_sg_for_cpu(struct device *dev __maybe_unused,
+					     struct scatterlist *sg __maybe_unused,
+					     int nelems __maybe_unused, int direction __maybe_unused)
 {
 }
 
-static inline void debug_dma_sync_sg_for_device(struct device *dev,
-						struct scatterlist *sg,
-						int nelems, int direction)
+static inline void debug_dma_sync_sg_for_device(struct device *dev __maybe_unused,
+						struct scatterlist *sg __maybe_unused,
+						int nelems __maybe_unused, int direction __maybe_unused)
 {
 }
 
-static inline void debug_dma_dump_mappings(struct device *dev)
+static inline void debug_dma_dump_mappings(struct device *dev __maybe_unused)
 {
 }
 
-static inline void debug_dma_assert_idle(struct page *page)
+static inline void debug_dma_assert_idle(struct page *page __maybe_unused)
 {
 }