--- zzzz-none-000/linux-5.4.213/include/linux/dma-mapping.h	2022-09-15 10:04:56.000000000 +0000
+++ miami-7690-761/linux-5.4.213/include/linux/dma-mapping.h	2024-05-29 11:20:02.000000000 +0000
@@ -762,6 +762,7 @@
 #ifdef CONFIG_DMA_DECLARE_COHERENT
 int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
 				dma_addr_t device_addr, size_t size);
+void dma_release_declared_memory(struct device *dev);
 #else
 static inline int
 dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
@@ -769,6 +770,11 @@
 {
 	return -ENOSYS;
 }
+
+static inline void
+dma_release_declared_memory(struct device *dev)
+{
+}
 #endif /* CONFIG_DMA_DECLARE_COHERENT */
 
 static inline void *dmam_alloc_coherent(struct device *dev, size_t size,