serial: pch_uart: fix tty-kref leak in rx-error path

Fix tty-kref leak introduced by commit 384e301e ("pch_uart: fix a
deadlock when pch_uart as console") which never put its tty reference.

Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 52379e56a31e7abc43a6642a799b1be7744be6c8..f0161d6ccc5c1d6352e8f8d3d6b399aecb2f382d 100644 (file)
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1098,6 +1098,8 @@ static void pch_uart_err_ir(struct eg20t_port *priv, unsigned int lsr)
        if (tty == NULL) {
                for (i = 0; error_msg[i] != NULL; i++)
                        dev_err(&priv->pdev->dev, error_msg[i]);
+       } else {
+               tty_kref_put(tty);
        }
 }