serial: samsung: missing uart_unregister_driver() on error in s3c24xx_serial_modinit()

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

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 89429410a245..1c2b8c31fde1 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)