diff options
| -rw-r--r-- | drivers/usb/serial/ftdi_sio.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index c540de15aad2..72314734dfd0 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1406,6 +1406,9 @@ static int write_latency_timer(struct usb_serial_port *port) int rv; int l = priv->latency; + if (priv->chip_type == SIO || priv->chip_type == FT8U232AM) + return -EINVAL; + if (priv->flags & ASYNC_LOW_LATENCY) l = 1; @@ -1429,6 +1432,9 @@ static int read_latency_timer(struct usb_serial_port *port) unsigned char *buf; int rv; + if (priv->chip_type == SIO || priv->chip_type == FT8U232AM) + return -EINVAL; + buf = kmalloc(1, GFP_KERNEL); if (!buf) return -ENOMEM; |