[Bluetooth] Add support for the Digianswer USB devices

The Digianswer USB Bluetooth devices uses a bRequestType of 0x40
for HCI commands, but the Bluetooth specification says that the
correct value is 0x20. This patch sets the needed value according
to the vendor and product id's of the Bluetooth device.

drivers/bluetooth/hci_usb.c

@@ -70,6 +70,9 @@
 static struct usb_driver hci_usb_driver; 
 
 static struct usb_device_id bluetooth_ids[] = {
+	/* Digianswer device */
+	{ USB_DEVICE(0x08fd, 0x0001), driver_info: HCI_DIGIANSWER },
+
 	/* Generic Bluetooth USB device */
 	{ USB_DEVICE_INFO(HCI_DEV_CLASS, HCI_DEV_SUBCLASS, HCI_DEV_PROTOCOL) },
 
@@ -426,7 +429,7 @@ static inline int hci_usb_send_ctrl(struct hci_usb *husb, struct sk_buff *skb)
 	} else
 		dr = (void *) _urb->urb.setup_packet;
 
-	dr->bRequestType = HCI_CTRL_REQ;
+	dr->bRequestType = husb->ctrl_req;
 	dr->bRequest = 0;
 	dr->wIndex   = 0;
 	dr->wValue   = 0;
@@ -872,6 +875,11 @@ int hci_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	husb->bulk_in_ep  = bulk_in_ep[0];
 	husb->intr_in_ep  = intr_in_ep[0];
 
+	if (id->driver_info & HCI_DIGIANSWER)
+		husb->ctrl_req = HCI_DIGI_REQ;
+	else
+		husb->ctrl_req = HCI_CTRL_REQ;
+
 #ifdef CONFIG_BT_USB_SCO
 	if (isoc_iface) {
 		BT_DBG("isoc ifnum %d alts %d", isoc_ifnum, isoc_alts);

drivers/bluetooth/hci_usb.h

@@ -35,6 +35,9 @@
 #define HCI_DEV_PROTOCOL     0x01	/* Bluetooth programming protocol */
 
 #define HCI_CTRL_REQ	     0x20
+#define HCI_DIGI_REQ	     0x40
+
+#define HCI_DIGIANSWER       0x01
 
 #define HCI_MAX_IFACE_NUM	3 
 
@@ -122,6 +125,8 @@ struct hci_usb {
 	struct usb_host_endpoint	*isoc_out_ep;
 	struct usb_host_endpoint	*isoc_in_ep;
 
+	__u8			ctrl_req;
+
 	struct sk_buff_head	transmit_q[4];
 	struct sk_buff		*reassembly[4]; // Reassembly buffers