serial: sunsu: add missing platform_driver_unregister() when module exit

We have registered platform driver when module init, and
need unregister it when module exit.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index 451687cb96850cd55c1fdd15f4832e591eae8f5d..0d8465728473304ed26a66877536c7cf002f22a4 100644 (file)
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -1592,6 +1592,7 @@ static int __init sunsu_init(void)
 
 static void __exit sunsu_exit(void)
 {
+       platform_driver_unregister(&su_driver);
        if (sunsu_reg.nr)
                sunserial_unregister_minors(&sunsu_reg, sunsu_reg.nr);
 }