diff --git a/kernel/sys.c b/kernel/sys.c
index 9a24374c23bc4f69116d264991689b1aaa9c38fe..5fc10d3e3891a41b65e65e4a1b636db77313cd32 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -391,6 +391,7 @@ asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, void __user
 	case LINUX_REBOOT_CMD_RESTART:
 		notifier_call_chain(&reboot_notifier_list, SYS_RESTART, NULL);
 		system_state = SYSTEM_RESTART;
+		device_suspend(PMSG_FREEZE);
 		device_shutdown();
 		printk(KERN_EMERG "Restarting system.\n");
 		machine_restart(NULL);
@@ -452,6 +453,7 @@ asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, void __user
 		}
 		notifier_call_chain(&reboot_notifier_list, SYS_RESTART, NULL);
 		system_state = SYSTEM_RESTART;
+		device_suspend(PMSG_FREEZE);
 		device_shutdown();
 		printk(KERN_EMERG "Starting new kernel\n");
 		machine_shutdown();