[Bluetooth] Use raw mode for the CSR sniffer device

The CSR sniffer device looks like a normal H:2 Bluetooth device,
but it is not and so mark it as raw mode device.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/hci_usb.c

@@ -113,12 +113,15 @@ static struct usb_device_id blacklist_ids[] = {
 	/* ISSC Bluetooth Adapter v3.1 */
 	{ USB_DEVICE(0x1131, 0x1001), .driver_info = HCI_RESET },
 
+	/* RTX Telecom based adapter with buggy SCO support */
+	{ USB_DEVICE(0x0400, 0x0807), .driver_info = HCI_BROKEN_ISOC },
+
 	/* Digianswer devices */
 	{ USB_DEVICE(0x08fd, 0x0001), .driver_info = HCI_DIGIANSWER },
 	{ USB_DEVICE(0x08fd, 0x0002), .driver_info = HCI_IGNORE },
 
-	/* RTX Telecom based adapter with buggy SCO support */
-	{ USB_DEVICE(0x0400, 0x0807), .driver_info = HCI_BROKEN_ISOC },
+	/* CSR BlueCore Bluetooth Sniffer */
+	{ USB_DEVICE(0x0a12, 0x0002), .driver_info = HCI_SNIFFER },
 
 	{ }	/* Terminating entry */
 };
@@ -969,6 +972,11 @@ static int hci_usb_probe(struct usb_interface *intf, const struct usb_device_id
 	if (reset || id->driver_info & HCI_RESET)
 		set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
 
+	if (id->driver_info & HCI_SNIFFER) {
+		if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
+			set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
+	}
+
 	if (hci_register_dev(hdev) < 0) {
 		BT_ERR("Can't register HCI device");
 		hci_free_dev(hdev);

drivers/bluetooth/hci_usb.h

@@ -31,7 +31,8 @@
 #define HCI_IGNORE		0x01
 #define HCI_RESET		0x02
 #define HCI_DIGIANSWER		0x04
-#define HCI_BROKEN_ISOC		0x08
+#define HCI_SNIFFER		0x08
+#define HCI_BROKEN_ISOC		0x10
 
 #define HCI_MAX_IFACE_NUM	3