--- zzzz-none-000/linux-2.6.39.4/init/do_mounts.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-arm-6490-729/linux-2.6.39.4/init/do_mounts.c	2021-11-10 13:23:10.000000000 +0000
@@ -66,9 +66,9 @@
  *
  * Returns 1 if the device matches, and 0 otherwise.
  */
-static int match_dev_by_uuid(struct device *dev, void *data)
+static int match_dev_by_uuid(struct device *dev, const void *data)
 {
-	u8 *uuid = data;
+	const u8 *uuid = data;
 	struct hd_struct *part = dev_to_part(dev);
 
 	if (!part->info)
@@ -215,7 +215,7 @@
 	return res;
 }
 
-static int __init root_dev_setup(char *line)
+int __init root_dev_setup(char *line)
 {
 	strlcpy(saved_root_name, line, sizeof(saved_root_name));
 	return 1;
@@ -459,6 +459,7 @@
 		root_device_name = saved_root_name;
 		if (!strncmp(root_device_name, "mtd", 3) ||
 		    !strncmp(root_device_name, "ubi", 3)) {
+			printk("root device name :%s\r\n",root_device_name);
 			mount_block_root(root_device_name, root_mountflags);
 			goto out;
 		}