diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c
index 14da9ec0e..505bf6ba1 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c
@@ -11,7 +11,7 @@ History:
 Author: AIIT XUOS Lab
 Modification: re-develop usb_hc_malloc, usb_hc_malloc_align and usb_hc_free functions
 *************************************************/
-struct usb_mem_pool usb_mem_pool;
+struct usb_mem_pool usb_mem_data_pool;
 
 
 void *usb_hc_malloc(size_t size){
@@ -59,7 +59,7 @@ int usb_mem_pool_init(){
     int rc, count;
     uintptr_t phy_addr, vir_addr;
 
-    memset(&usb_mem_pool, 0, sizeof(usb_mem_pool));
+    memset(&usb_mem_data_pool, 0, sizeof(usb_mem_data_pool));
     
     count = 0;
     while(count < MEM_POOL_SIZE){
@@ -68,8 +68,8 @@ int usb_mem_pool_init(){
         if(rc != 0)
             goto mmap_error;
 
-        usb_mem_pool.pages[count].vir_addr = vir_addr;
-        usb_mem_pool.pages[count].phy_addr = phy_addr;
+        usb_mem_data_pool.pages[count].vir_addr = vir_addr;
+        usb_mem_data_pool.pages[count].phy_addr = phy_addr;
 
         count++;
     }
@@ -85,8 +85,8 @@ int usb_alloc_mem_page(usb_mem_page_t page){
     usb_mem_page_t selected_page;
     int header, tail;
 
-    header = usb_mem_pool.header;
-    tail = usb_mem_pool.tail;
+    header = usb_mem_data_pool.header;
+    tail = usb_mem_data_pool.tail;
 
 
 /* 
@@ -96,7 +96,7 @@ int usb_alloc_mem_page(usb_mem_page_t page){
     if((tail + 1) % MEM_POOL_SIZE == header)
         return -1;
 
-    selected_page = &usb_mem_pool.pages[tail];
+    selected_page = &usb_mem_data_pool.pages[tail];
     tail++;
 
     memcpy(page, selected_page, sizeof(struct usb_mem_page));
@@ -104,7 +104,7 @@ int usb_alloc_mem_page(usb_mem_page_t page){
     if(tail == MEM_POOL_SIZE)
         tail = 0;
 
-    usb_mem_pool.tail = tail;
+    usb_mem_data_pool.tail = tail;
 
     return 0;
 }
@@ -115,8 +115,8 @@ void usb_free_mem_page(usb_mem_page_t page){
     usb_mem_page_t selected_page;
     int header, tail;
 
-    header = usb_mem_pool.header;
-    tail = usb_mem_pool.tail;
+    header = usb_mem_data_pool.header;
+    tail = usb_mem_data_pool.tail;
 
 /* 
  * Check whether the memory pool is full or not.
@@ -124,7 +124,7 @@ void usb_free_mem_page(usb_mem_page_t page){
     if((header + 1) % MEM_POOL_SIZE == tail)
         return;
 
-    selected_page = &usb_mem_pool.pages[header];
+    selected_page = &usb_mem_data_pool.pages[header];
     selected_page->vir_addr = page->vir_addr;
     selected_page->phy_addr = page->phy_addr;
 
@@ -133,14 +133,14 @@ void usb_free_mem_page(usb_mem_page_t page){
     if(header == MEM_POOL_SIZE)
         header = 0;
 
-    usb_mem_pool.header = header;
+    usb_mem_data_pool.header = header;
 }
 
 
 int usb_used_page_num_mem_pool(){
     int header, tail, used_num;
-    header = usb_mem_pool.header;
-    tail = usb_mem_pool.tail;
+    header = usb_mem_data_pool.header;
+    tail = usb_mem_data_pool.tail;
 
     used_num = tail - header;
 
@@ -155,13 +155,13 @@ uintptr_t usb_mem_page_phy2vir(uintptr_t phy_addr){
     int header, used_num, cnt;
     uintptr_t vir_addr = 0;
 
-    header = usb_mem_pool.header;
+    header = usb_mem_data_pool.header;
     used_num = usb_used_page_num_mem_pool();
 
     cnt = 0;
     while(cnt < used_num){
-        if(usb_mem_pool.pages[header].phy_addr == phy_addr){
-            vir_addr = usb_mem_pool.pages[header].vir_addr;
+        if(usb_mem_data_pool.pages[header].phy_addr == phy_addr){
+            vir_addr = usb_mem_data_pool.pages[header].vir_addr;
             break;
         }