Messages in this thread Patch in this message | | | Date | Wed, 01 Feb 2012 13:00:04 -0800 | From | Greg KH <> | Subject | [40/89] USB: ftdi_sio: fix TIOCSSERIAL baud_base handling |
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3.2-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold <jhovold@gmail.com>
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 <torbjorn@pi.nxs.se> Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/usb/serial/ftdi_sio.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1333,8 +1333,7 @@ static int set_serial_info(struct tty_st 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) { mutex_unlock(&priv->cfg_lock); return -EINVAL; }
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