[PATCH] serial: samsung: missing uart_unregister_driver() on error in s3c24xx_serial_modinit()

[Wei Yongjun]

From: Wei Yongjun <yongjun_wei at trendmicro.com.cn>

Add the missing uart_unregister_driver() before return from
s3c24xx_serial_modinit() in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei at trendmicro.com.cn>
---
 drivers/tty/serial/samsung.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 8942941..1c2b8c3 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -1798,7 +1798,13 @@ static int __init s3c24xx_serial_modinit(void)
 		return ret;
 	}
 
-	return platform_driver_register(&samsung_serial_driver);
+	ret = platform_driver_register(&samsung_serial_driver);
+	if (ret < 0) {
+		pr_err("Failed to register platform driver\n");
+		uart_unregister_driver(&s3c24xx_uart_drv);
+	}
+
+	return ret;
 }
 
 static void __exit s3c24xx_serial_modexit(void)