--- zzzz-none-000/linux-3.10.107/arch/arm/include/asm/cacheflush.h	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/arch/arm/include/asm/cacheflush.h	2021-11-10 11:53:52.000000000 +0000
@@ -94,6 +94,21 @@
  *	DMA Cache Coherency
  *	===================
  *
+ *	dma_inv_range(start, end)
+ *
+ *		Invalidate (discard) the specified virtual address range.
+ *		May not write back any entries.  If 'start' or 'end'
+ *		are not cache line aligned, those lines must be written
+ *		back.
+ *		- start  - virtual start address
+ *		- end    - virtual end address
+ *
+ *	dma_clean_range(start, end)
+ *
+ *		Clean (write back) the specified virtual address range.
+ *		- start  - virtual start address
+ *		- end    - virtual end address
+ *
  *	dma_flush_range(start, end)
  *
  *		Clean and invalidate the specified virtual address range.
@@ -115,6 +130,10 @@
 	void (*dma_map_area)(const void *, size_t, int);
 	void (*dma_unmap_area)(const void *, size_t, int);
 
+#if defined(CONFIG_ARCH_IPQ806X) || defined(CONFIG_ARCH_IPQ806X_DT)
+	void (*dma_inv_range)(const void *, const void *);
+	void (*dma_clean_range)(const void *, const void *);
+#endif /* AVM: TODO: Notwendigkeit prüfen */
 	void (*dma_flush_range)(const void *, const void *);
 };
 
@@ -123,6 +142,8 @@
  */
 #ifdef MULTI_CACHE
 
+// AVM4080 we have got multicache!
+
 extern struct cpu_cache_fns cpu_cache;
 
 #define __cpuc_flush_icache_all		cpu_cache.flush_icache_all
@@ -142,6 +163,10 @@
  */
 #define dmac_map_area			cpu_cache.dma_map_area
 #define dmac_unmap_area			cpu_cache.dma_unmap_area
+#if defined(CONFIG_ARCH_IPQ806X) || defined(CONFIG_ARCH_IPQ806X_DT)
+#define dmac_inv_range			cpu_cache.dma_inv_range
+#define dmac_clean_range		cpu_cache.dma_clean_range
+#endif /* AVM: TODO: Notwendigkeit prüfen */
 #define dmac_flush_range		cpu_cache.dma_flush_range
 
 #else
@@ -229,7 +254,8 @@
 }
 
 static inline void
-vivt_flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
+vivt_flush_cache_range(struct vm_area_struct *vma, unsigned long start,
+		       unsigned long end)
 {
 	struct mm_struct *mm = vma->vm_mm;
 
@@ -239,7 +265,8 @@
 }
 
 static inline void
-vivt_flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn)
+vivt_flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr,
+		      unsigned long pfn __maybe_unused)
 {
 	struct mm_struct *mm = vma->vm_mm;
 
@@ -344,7 +371,8 @@
  * data, we need to do a full cache flush to ensure that writebacks
  * don't corrupt data placed into these pages via the new mappings.
  */
-static inline void flush_cache_vmap(unsigned long start, unsigned long end)
+static inline void flush_cache_vmap(unsigned long start __maybe_unused,
+				    unsigned long end __maybe_unused)
 {
 	if (!cache_is_vipt_nonaliasing())
 		flush_cache_all();
@@ -356,7 +384,8 @@
 		dsb();
 }
 
-static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
+static inline void flush_cache_vunmap(unsigned long start __maybe_unused,
+				      unsigned long end __maybe_unused )
 {
 	if (!cache_is_vipt_nonaliasing())
 		flush_cache_all();