--- zzzz-none-000/linux-2.6.39.4/arch/arm/include/asm/dma-mapping.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/arch/arm/include/asm/dma-mapping.h	2021-11-10 13:38:14.000000000 +0000
@@ -20,22 +20,22 @@
  * addresses. They must not be used by drivers.
  */
 #ifndef __arch_pfn_to_dma
-static inline dma_addr_t pfn_to_dma(struct device *dev, unsigned long pfn)
+static inline dma_addr_t pfn_to_dma(struct device *dev __attribute__((unused)), unsigned long pfn)
 {
 	return (dma_addr_t)__pfn_to_bus(pfn);
 }
 
-static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
+static inline unsigned long dma_to_pfn(struct device *dev __attribute__((unused)), dma_addr_t addr)
 {
 	return __bus_to_pfn(addr);
 }
 
-static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
+static inline void *dma_to_virt(struct device *dev __attribute__((unused)), dma_addr_t addr)
 {
 	return (void *)__bus_to_virt(addr);
 }
 
-static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
+static inline dma_addr_t virt_to_dma(struct device *dev __attribute__((unused)), void *addr)
 {
 	return (dma_addr_t)__virt_to_bus((unsigned long)(addr));
 }
@@ -124,7 +124,7 @@
  * FIXME: This should really be a platform specific issue - we should
  * return false if GFP_DMA allocations may not satisfy the supplied 'mask'.
  */
-static inline int dma_supported(struct device *dev, u64 mask)
+static inline int dma_supported(struct device *dev __attribute__((unused)), u64 mask)
 {
 	if (mask < ISA_DMA_THRESHOLD)
 		return 0;
@@ -152,23 +152,23 @@
 /*
  * DMA errors are defined by all-bits-set in the DMA address.
  */
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+static inline int dma_mapping_error(struct device *dev __attribute__((unused)), dma_addr_t dma_addr)
 {
-	return dma_addr == ~0;
+	return dma_addr == ~0U;
 }
 
 /*
  * Dummy noncoherent implementation.  We don't provide a dma_cache_sync
  * function so drivers using this API are highlighted with build warnings.
  */
-static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
-		dma_addr_t *handle, gfp_t gfp)
+static inline void *dma_alloc_noncoherent(struct device *dev __attribute__((unused)), size_t size __attribute__((unused)),
+		dma_addr_t *handle __attribute__((unused)), gfp_t gfp __attribute__((unused)))
 {
 	return NULL;
 }
 
-static inline void dma_free_noncoherent(struct device *dev, size_t size,
-		void *cpu_addr, dma_addr_t handle)
+static inline void dma_free_noncoherent(struct device *dev __attribute__((unused)), size_t size __attribute__((unused)),
+		void *cpu_addr __attribute__((unused)), dma_addr_t handle __attribute__((unused)))
 {
 }
 
@@ -315,14 +315,14 @@
 int dmabounce_sync_for_device(struct device *, dma_addr_t, unsigned long,
 		size_t, enum dma_data_direction);
 #else
-static inline int dmabounce_sync_for_cpu(struct device *d, dma_addr_t addr,
-	unsigned long offset, size_t size, enum dma_data_direction dir)
+static inline int dmabounce_sync_for_cpu(struct device *d __attribute__((unused)), dma_addr_t addr __attribute__((unused)),
+	unsigned long offset __attribute__((unused)), size_t size __attribute__((unused)), enum dma_data_direction dir __attribute__((unused)))
 {
 	return 1;
 }
 
-static inline int dmabounce_sync_for_device(struct device *d, dma_addr_t addr,
-	unsigned long offset, size_t size, enum dma_data_direction dir)
+static inline int dmabounce_sync_for_device(struct device *d __attribute__((unused)), dma_addr_t addr __attribute__((unused)),
+	unsigned long offset __attribute__((unused)), size_t size __attribute__((unused)), enum dma_data_direction dir __attribute__((unused)))
 {
 	return 1;
 }