openwrt/target/linux/generic/patches-3.9/921-use_preinit_as_init.patch

--- a/init/main.c
+++ b/init/main.c
@@ -848,7 +848,8 @@ static int __ref kernel_init(void *unuse
 		printk(KERN_WARNING "Failed to execute %s.  Attempting "
 					"defaults...\n", execute_command);
 	}
-	if (!run_init_process("/sbin/init") ||
+	if (!run_init_process("/etc/preinit") ||
+	    !run_init_process("/sbin/init") ||
 	    !run_init_process("/etc/init") ||
 	    !run_init_process("/bin/init") ||
 	    !run_init_process("/bin/sh"))