[PATCH 1/6] USB: serial: cp210x: fix control-characters error handling

From: Johan Hovold
Date: Fri Jul 02 2021 - 09:42:59 EST


In the unlikely event that setting the software flow-control characters
fails the other flow-control settings should still be updated.

Fixes: 7748feffcd80 ("USB: serial: cp210x: add support for software flow control")
Cc: stable@xxxxxxxxxxxxxxx # 5.11
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/usb/serial/cp210x.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 09b845d0da41..b41e2c7649fb 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -1217,9 +1217,7 @@ static void cp210x_set_flow_control(struct tty_struct *tty,
chars.bXonChar = START_CHAR(tty);
chars.bXoffChar = STOP_CHAR(tty);

- ret = cp210x_set_chars(port, &chars);
- if (ret)
- return;
+ cp210x_set_chars(port, &chars);
}

mutex_lock(&port_priv->mutex);
--
2.31.1