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-rw-r--r--drivers/bluetooth/btusb.c22
1 files changed, 15 insertions, 7 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 9ed334de34d0..bbe25e397f41 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -61,6 +61,7 @@ static struct usb_driver btusb_driver;
#define BTUSB_BCM_APPLE 0x10000
#define BTUSB_REALTEK 0x20000
#define BTUSB_BCM2045 0x40000
+#define BTUSB_IFNUM_2 0x80000
static const struct usb_device_id btusb_table[] = {
/* Generic Bluetooth USB device */
@@ -74,7 +75,7 @@ static const struct usb_device_id btusb_table[] = {
/* Apple-specific (Broadcom) devices */
{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
- .driver_info = BTUSB_BCM_APPLE },
+ .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
/* MediaTek MT76x0E */
{ USB_DEVICE(0x0e8d, 0x763f) },
@@ -2758,13 +2759,20 @@ static int btusb_probe(struct usb_interface *intf,
struct usb_endpoint_descriptor *ep_desc;
struct btusb_data *data;
struct hci_dev *hdev;
+ unsigned ifnum_base;
int i, err;
BT_DBG("intf %p id %p", intf, id);
/* interface numbers are hardcoded in the spec */
- if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
- return -ENODEV;
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
+ if (!(id->driver_info & BTUSB_IFNUM_2))
+ return -ENODEV;
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
+ return -ENODEV;
+ }
+
+ ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
if (!id->driver_info) {
const struct usb_device_id *match;
@@ -2880,7 +2888,7 @@ static int btusb_probe(struct usb_interface *intf,
hdev->set_bdaddr = btbcm_set_bdaddr;
/* Broadcom LM_DIAG Interface numbers are hardcoded */
- data->diag = usb_ifnum_to_if(data->udev, 2);
+ data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
}
if (id->driver_info & BTUSB_BCM_APPLE) {
@@ -2889,7 +2897,7 @@ static int btusb_probe(struct usb_interface *intf,
hdev->set_diag = btusb_bcm_set_diag;
/* Broadcom LM_DIAG Interface numbers are hardcoded */
- data->diag = usb_ifnum_to_if(data->udev, 2);
+ data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
}
#endif
@@ -2953,8 +2961,8 @@ static int btusb_probe(struct usb_interface *intf,
/* AMP controllers do not support SCO packets */
data->isoc = NULL;
} else {
- /* Interface numbers are hardcoded in the specification */
- data->isoc = usb_ifnum_to_if(data->udev, 1);
+ /* Interface orders are hardcoded in the specification */
+ data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
}
if (!reset)