diff options
Diffstat (limited to 'drivers/usb/serial/pl2303.c')
| -rw-r--r-- | drivers/usb/serial/pl2303.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index be8067017eaa..eed9acd1ae08 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -183,6 +183,7 @@ struct pl2303_type_data { speed_t max_baud_rate; unsigned long quirks; unsigned int no_autoxonxoff:1; + unsigned int no_divisors:1; }; struct pl2303_serial_private { @@ -209,6 +210,7 @@ static const struct pl2303_type_data pl2303_type_data[TYPE_COUNT] = { }, [TYPE_HXN] = { .max_baud_rate = 12000000, + .no_divisors = true, }, }; @@ -448,13 +450,11 @@ static int pl2303_port_probe(struct usb_serial_port *port) return 0; } -static int pl2303_port_remove(struct usb_serial_port *port) +static void pl2303_port_remove(struct usb_serial_port *port) { struct pl2303_private *priv = usb_get_serial_port_data(port); kfree(priv); - - return 0; } static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value) @@ -571,8 +571,12 @@ static void pl2303_encode_baud_rate(struct tty_struct *tty, baud = min_t(speed_t, baud, spriv->type->max_baud_rate); /* * Use direct method for supported baud rates, otherwise use divisors. + * Newer chip types do not support divisor encoding. */ - baud_sup = pl2303_get_supported_baud_rate(baud); + if (spriv->type->no_divisors) + baud_sup = baud; + else + baud_sup = pl2303_get_supported_baud_rate(baud); if (baud == baud_sup) baud = pl2303_encode_baud_rate_direct(buf, baud); |