[PATCH] serial: samsung: Checks the return value of function

[Tamseel Shams]

"uart_add_one_port" function call may fail and return
some error code, so adding a check for return value.
If it is returning some error code, then displaying the
result and returning back from there.

Signed-off-by: Tamseel Shams <m.sh...@samsung.com>
---
 drivers/tty/serial/samsung_tty.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index 6ef614d8648c..a220ba166ffe 100644
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -2072,7 +2072,11 @@ static int s3c24xx_serial_probe(struct platform_device 
*pdev)
        }
 
        dev_dbg(&pdev->dev, "%s: adding port\n", __func__);
-       uart_add_one_port(&s3c24xx_uart_drv, &ourport->port);
+       ret = uart_add_one_port(&s3c24xx_uart_drv, &ourport->port);
+       if (ret < 0) {
+               dev_err(&pdev->dev, "Failed to add uart port, err %d\n", ret);
+               return ret;
+       }
        platform_set_drvdata(pdev, &ourport->port);
 
        /*
-- 
2.17.1