Also fixes DMA transfer to stack for latency buffer.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
struct usb_device *udev = port->serial->dev;
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
struct usb_device *udev = port->serial->dev;
- unsigned short latency = 0;
int rv = 0;
dbg("%s", __func__);
int rv = 0;
dbg("%s", __func__);
+ buf = kmalloc(1, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
rv = usb_control_msg(udev,
usb_rcvctrlpipe(udev, 0),
FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
0, priv->interface,
rv = usb_control_msg(udev,
usb_rcvctrlpipe(udev, 0),
FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
0, priv->interface,
- (char *) &latency, 1, WDR_TIMEOUT);
-
if (rv < 0)
dev_err(&port->dev, "Unable to read latency timer: %i\n", rv);
else
if (rv < 0)
dev_err(&port->dev, "Unable to read latency timer: %i\n", rv);
else
- priv->latency = latency;
+ priv->latency = buf[0];
+
+ kfree(buf);
+