diff --git a/common/usb_storage.c b/common/usb_storage.c
index 950451e..0c2a4c7 100644
--- a/common/usb_storage.c
+++ b/common/usb_storage.c
@@ -179,9 +179,9 @@
 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
 		      struct us_data *ss);
 unsigned long usb_stor_read(int device, unsigned long blknr,
-			    unsigned long blkcnt, void *buffer);
+			    lbaint_t blkcnt, void *buffer);
 unsigned long usb_stor_write(int device, unsigned long blknr,
-			     unsigned long blkcnt, const void *buffer);
+			     lbaint_t blkcnt, const void *buffer);
 struct usb_device * usb_get_dev_index(int index);
 void uhci_show_temp_int_td(void);
 
@@ -1053,9 +1053,10 @@
 #endif /* CONFIG_USB_BIN_FIXUP */
 
 unsigned long usb_stor_read(int device, unsigned long blknr,
-			    unsigned long blkcnt, void *buffer)
+			    lbaint_t blkcnt, void *buffer)
 {
-	unsigned long start, blks, buf_addr;
+	lbaint_t start, blks;
+	uintptr_t buf_addr;
 	unsigned short smallblks;
 	struct usb_device *dev;
 	struct us_data *ss;
@@ -1084,7 +1085,7 @@
 	start = blknr;
 	blks = blkcnt;
 
-	USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx"
+	USB_STOR_PRINTF("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF
 			" buffer %lx\n", device, start, blks, buf_addr);
 
 	do {
@@ -1114,7 +1115,8 @@
 	} while (blks != 0);
 	ss->flags &= ~USB_READY;
 
-	USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",
+	USB_STOR_PRINTF("usb_read: end startblk " LBAF
+			", blccnt %x buffer %lx\n",
 			start, smallblks, buf_addr);
 
 	usb_disable_asynch(0); /* asynch transfer allowed */
@@ -1124,9 +1126,10 @@
 }
 
 unsigned long usb_stor_write(int device, unsigned long blknr,
-				unsigned long blkcnt, const void *buffer)
+				lbaint_t blkcnt, const void *buffer)
 {
-	unsigned long start, blks, buf_addr;
+	lbaint_t start, blks;
+	uintptr_t buf_addr;
 	unsigned short smallblks;
 	struct usb_device *dev;
 	struct us_data *ss;
@@ -1156,7 +1159,7 @@
 	start = blknr;
 	blks = blkcnt;
 
-	USB_STOR_PRINTF("\nusb_write: dev %d startblk %lx, blccnt %lx"
+	USB_STOR_PRINTF("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF
 			" buffer %lx\n", device, start, blks, buf_addr);
 
 	do {
@@ -1188,7 +1191,8 @@
 	} while (blks != 0);
 	ss->flags &= ~USB_READY;
 
-	USB_STOR_PRINTF("usb_write: end startblk %lx, blccnt %x buffer %lx\n",
+	USB_STOR_PRINTF("usb_write: end startblk " LBAF
+			", blccnt %x buffer %lx\n",
 			start, smallblks, buf_addr);
 
 	usb_disable_asynch(0); /* asynch transfer allowed */