diff options
| -rw-r--r-- | drivers/usb/serial/ftdi_sio.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 9228e56a91c0..6f2659e59b2e 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1486,15 +1486,13 @@ static void get_serial_info(struct tty_struct *tty, struct serial_struct *ss) ss->custom_divisor = priv->custom_divisor; } -static int set_serial_info(struct tty_struct *tty, - struct serial_struct *ss) +static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss) { struct usb_serial_port *port = tty->driver_data; struct ftdi_private *priv = usb_get_serial_port_data(port); - struct ftdi_private old_priv; + int old_flags, old_divisor; mutex_lock(&priv->cfg_lock); - old_priv = *priv; if (!capable(CAP_SYS_ADMIN)) { if ((ss->flags ^ priv->flags) & ~ASYNC_USR_MASK) { @@ -1503,14 +1501,17 @@ static int set_serial_info(struct tty_struct *tty, } } + old_flags = priv->flags; + old_divisor = priv->custom_divisor; + priv->flags = ss->flags & ASYNC_FLAGS; priv->custom_divisor = ss->custom_divisor; write_latency_timer(port); - if ((priv->flags ^ old_priv.flags) & ASYNC_SPD_MASK || + if ((priv->flags ^ old_flags) & ASYNC_SPD_MASK || ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST && - priv->custom_divisor != old_priv.custom_divisor)) { + priv->custom_divisor != old_divisor)) { /* warn about deprecation unless clearing */ if (priv->flags & ASYNC_SPD_MASK) |