--- zzzz-none-000/linux-4.1.52/include/linux/dmaengine.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/include/linux/dmaengine.h	2022-03-02 11:37:13.000000000 +0000
@@ -463,16 +463,16 @@
 dmaengine_get_unmap_data(struct device *dev, int nr, gfp_t flags);
 void dmaengine_unmap_put(struct dmaengine_unmap_data *unmap);
 #else
-static inline void dma_set_unmap(struct dma_async_tx_descriptor *tx,
-				 struct dmaengine_unmap_data *unmap)
+static inline void dma_set_unmap(struct dma_async_tx_descriptor *tx __maybe_unused,
+				 struct dmaengine_unmap_data *unmap __maybe_unused)
 {
 }
 static inline struct dmaengine_unmap_data *
-dmaengine_get_unmap_data(struct device *dev, int nr, gfp_t flags)
+dmaengine_get_unmap_data(struct device *dev __maybe_unused, int nr __maybe_unused, gfp_t flags __maybe_unused)
 {
 	return NULL;
 }
-static inline void dmaengine_unmap_put(struct dmaengine_unmap_data *unmap)
+static inline void dmaengine_unmap_put(struct dmaengine_unmap_data *unmap __maybe_unused)
 {
 }
 #endif
@@ -486,27 +486,35 @@
 }
 
 #ifndef CONFIG_ASYNC_TX_ENABLE_CHANNEL_SWITCH
-static inline void txd_lock(struct dma_async_tx_descriptor *txd)
+static inline void txd_lock(struct dma_async_tx_descriptor *txd __maybe_unused)
 {
 }
-static inline void txd_unlock(struct dma_async_tx_descriptor *txd)
+static inline void txd_unlock(struct dma_async_tx_descriptor *txd
+			      __maybe_unused)
 {
 }
-static inline void txd_chain(struct dma_async_tx_descriptor *txd, struct dma_async_tx_descriptor *next)
+static inline void txd_chain(struct dma_async_tx_descriptor *txd
+			     __maybe_unused,
+			     struct dma_async_tx_descriptor *next
+			     __maybe_unused)
 {
 	BUG();
 }
-static inline void txd_clear_parent(struct dma_async_tx_descriptor *txd)
+static inline void txd_clear_parent(struct dma_async_tx_descriptor *txd
+				    __maybe_unused)
 {
 }
-static inline void txd_clear_next(struct dma_async_tx_descriptor *txd)
+static inline void txd_clear_next(struct dma_async_tx_descriptor *txd
+				  __maybe_unused)
 {
 }
-static inline struct dma_async_tx_descriptor *txd_next(struct dma_async_tx_descriptor *txd)
+static inline struct dma_async_tx_descriptor *txd_next(
+			struct dma_async_tx_descriptor *txd __maybe_unused)
 {
 	return NULL;
 }
-static inline struct dma_async_tx_descriptor *txd_parent(struct dma_async_tx_descriptor *txd)
+static inline struct dma_async_tx_descriptor *txd_parent(
+			struct dma_async_tx_descriptor *txd __maybe_unused)
 {
 	return NULL;
 }
@@ -904,7 +912,7 @@
 {
 }
 static inline struct dma_chan *
-async_dma_find_channel(enum dma_transaction_type type)
+async_dma_find_channel(enum dma_transaction_type type __maybe_unused)
 {
 	return NULL;
 }
@@ -1039,41 +1047,41 @@
 void dma_release_channel(struct dma_chan *chan);
 int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_caps *caps);
 #else
-static inline struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type)
+static inline struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type __maybe_unused)
 {
 	return NULL;
 }
-static inline enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie)
+static inline enum dma_status dma_sync_wait(struct dma_chan *chan __maybe_unused, dma_cookie_t cookie __maybe_unused)
 {
 	return DMA_COMPLETE;
 }
-static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx)
+static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx __maybe_unused)
 {
 	return DMA_COMPLETE;
 }
 static inline void dma_issue_pending_all(void)
 {
 }
-static inline struct dma_chan *__dma_request_channel(const dma_cap_mask_t *mask,
-					      dma_filter_fn fn, void *fn_param)
+static inline struct dma_chan *__dma_request_channel(const dma_cap_mask_t *mask __maybe_unused,
+					      dma_filter_fn fn __maybe_unused, void *fn_param __maybe_unused)
 {
 	return NULL;
 }
 static inline struct dma_chan *dma_request_slave_channel_reason(
-					struct device *dev, const char *name)
+					struct device *dev __maybe_unused, const char *name __maybe_unused)
 {
 	return ERR_PTR(-ENODEV);
 }
-static inline struct dma_chan *dma_request_slave_channel(struct device *dev,
-							 const char *name)
+static inline struct dma_chan *dma_request_slave_channel(struct device *dev __maybe_unused,
+							 const char *name __maybe_unused)
 {
 	return NULL;
 }
-static inline void dma_release_channel(struct dma_chan *chan)
+static inline void dma_release_channel(struct dma_chan *chan __maybe_unused)
 {
 }
-static inline int dma_get_slave_caps(struct dma_chan *chan,
-				     struct dma_slave_caps *caps)
+static inline int dma_get_slave_caps(struct dma_chan *chan __maybe_unused,
+				     struct dma_slave_caps *caps __maybe_unused)
 {
 	return -ENXIO;
 }