From d71e097d67569b483cdecec08b736e49d1df1d37 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 10 Jan 2012 23:33:37 +0100 Subject: [PATCH] USB: ftdi_sio: fix TIOCSSERIAL baud_base handling MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit commit eb833a9e0972f60beb4ab8104ad7ef6bf30f02fc upstream. Return EINVAL if new baud_base does not match the current one. The baud_base is device specific and can not be changed. This restores the old (pre-2005) behaviour which was changed due to a misunderstanding regarding this fact (see https://lkml.org/lkml/2005/1/20/84). Reported-by: Torbjörn Lofterud Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 5ce2cb919044..dec7c21ff885 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1351,8 +1351,7 @@ static int set_serial_info(struct tty_struct *tty, goto check_and_exit; } - if ((new_serial.baud_base != priv->baud_base) && - (new_serial.baud_base < 9600)) { + if (new_serial.baud_base != priv->baud_base) { unlock_kernel(); return -EINVAL; } -- 2.39.5