--- zzzz-none-000/linux-5.4.213/include/linux/dmapool.h	2022-09-15 10:04:56.000000000 +0000
+++ miami-7690-761/linux-5.4.213/include/linux/dmapool.h	2024-05-29 11:20:02.000000000 +0000
@@ -16,6 +16,17 @@
 
 struct device;
 
+struct dma_pool {		/* the pool */
+	struct list_head page_list;
+	spinlock_t lock;
+	size_t size;
+	struct device *dev;
+	size_t allocation;
+	size_t boundary;
+	char name[32];
+	struct list_head pools;
+};
+
 #ifdef CONFIG_HAS_DMA
 
 struct dma_pool *dma_pool_create(const char *name, struct device *dev,