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-rw-r--r--drivers/usb/serial/ftdi_sio.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 12a4b74ca1f4..e0f4c3d9649c 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1571,7 +1571,8 @@ static void ftdi_determine_type(struct usb_serial_port *port)
dev_dbg(&port->dev, "%s: bcdDevice = 0x%x, bNumInterfaces = %u\n", __func__,
version, interfaces);
if (interfaces > 1) {
- int inter;
+ struct usb_interface *intf = serial->interface;
+ int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
/* Multiple interfaces.*/
if (version == 0x0800) {
@@ -1586,16 +1587,15 @@ static void ftdi_determine_type(struct usb_serial_port *port)
priv->chip_type = FT2232C;
/* Determine interface code. */
- inter = serial->interface->altsetting->desc.bInterfaceNumber;
- if (inter == 0) {
+ if (ifnum == 0)
priv->interface = INTERFACE_A;
- } else if (inter == 1) {
+ else if (ifnum == 1)
priv->interface = INTERFACE_B;
- } else if (inter == 2) {
+ else if (ifnum == 2)
priv->interface = INTERFACE_C;
- } else if (inter == 3) {
+ else if (ifnum == 3)
priv->interface = INTERFACE_D;
- }
+
/* BM-type devices have a bug where bcdDevice gets set
* to 0x200 when iSerialNumber is 0. */
if (version < 0x500) {