From 2d9a00705910ccea2dc5d9cba5469ff2de72fc87 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 5 Jul 2021 10:20:10 +0200 Subject: [PATCH] USB: serial: cp210x: fix control-characters error handling In the unlikely event that setting the software flow-control characters fails the other flow-control settings should still be updated (just like all other terminal settings). Move out the error message printed by the set_chars() helper to make it more obvious that this is intentional. Fixes: 7748feffcd80 ("USB: serial: cp210x: add support for software flow control") Cc: stable@vger.kernel.org # 5.11 Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold --- drivers/usb/serial/cp210x.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 3c80bfbf3bec9..ad6aeb44f3e6c 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -1164,10 +1164,8 @@ static int cp210x_set_chars(struct usb_serial_port *port, kfree(dmabuf); - if (result < 0) { - dev_err(&port->dev, "failed to set special chars: %d\n", result); + if (result < 0) return result; - } return 0; } @@ -1219,8 +1217,10 @@ static void cp210x_set_flow_control(struct tty_struct *tty, chars.bXoffChar = STOP_CHAR(tty); ret = cp210x_set_chars(port, &chars); - if (ret) - return; + if (ret) { + dev_err(&port->dev, "failed to set special chars: %d\n", + ret); + } } mutex_lock(&port_priv->mutex); -- 2.30.2