From 1b615beec7e8a1c40158c69a142e9e9832a6f7ad Mon Sep 17 00:00:00 2001
From: Libo Chen <clbchenlibo.chen@huawei.com>
Date: Wed, 29 May 2013 10:33:16 +0800
Subject: driver: tty: add missing unregister in err case

when platform_driver_register broken, we should unregister ucc_uart_driver

Signed-off-by: Libo chen <libo.chen@huawei.com>
Acked-by: Timur Tabi <timur@tabi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/ucc_uart.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c
index c8ab8e4..8831748 100644
--- a/drivers/tty/serial/ucc_uart.c
+++ b/drivers/tty/serial/ucc_uart.c
@@ -1517,9 +1517,11 @@ static int __init ucc_uart_init(void)
 	}
 
 	ret = platform_driver_register(&ucc_uart_of_driver);
-	if (ret)
+	if (ret) {
 		printk(KERN_ERR
 		       "ucc-uart: could not register platform driver\n");
+		uart_unregister_driver(&ucc_uart_driver);
+	}
 
 	return ret;
 }
-- 
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