Input: wacom - register the input devices on top of the HID one

Matches the current behavior of the HID subsystem and removes one more
dependency over USB.

The current user space clients which relies on this to fetch the
LEDs path need an update. However, we already break them in the
kernel v3.11 for the Bluetooth Wacom devices. They are going to be fixed
soon.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/drivers/input/tablet/wacom.h b/drivers/input/tablet/wacom.h
index b921239..dd67b7d 100644
--- a/drivers/input/tablet/wacom.h
+++ b/drivers/input/tablet/wacom.h
@@ -112,7 +112,6 @@
 	struct hid_device *hdev;
 	struct mutex lock;
 	struct work_struct work;
-	char phys[32];
 	struct wacom_led {
 		u8 select[2]; /* status led selector (0..3) */
 		u8 llv;       /* status led brightness no button (1..127) */
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index 6e21064..2650443 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -986,8 +986,7 @@
 static struct input_dev *wacom_allocate_input(struct wacom *wacom)
 {
 	struct input_dev *input_dev;
-	struct usb_interface *intf = wacom->intf;
-	struct usb_device *dev = interface_to_usbdev(intf);
+	struct hid_device *hdev = wacom->hdev;
 	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
 
 	input_dev = input_allocate_device();
@@ -995,11 +994,15 @@
 		return NULL;
 
 	input_dev->name = wacom_wac->name;
-	input_dev->phys = wacom->phys;
-	input_dev->dev.parent = &intf->dev;
+	input_dev->phys = hdev->phys;
+	input_dev->dev.parent = &hdev->dev;
 	input_dev->open = wacom_open;
 	input_dev->close = wacom_close;
-	usb_to_input_id(dev, &input_dev->id);
+	input_dev->uniq = hdev->uniq;
+	input_dev->id.bustype = hdev->bus;
+	input_dev->id.vendor  = hdev->vendor;
+	input_dev->id.product = hdev->product;
+	input_dev->id.version = hdev->version;
 	input_set_drvdata(input_dev, wacom);
 
 	return input_dev;
@@ -1266,8 +1269,6 @@
 	wacom->intf = intf;
 	mutex_init(&wacom->lock);
 	INIT_WORK(&wacom->work, wacom_wireless_work);
-	usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
-	strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
 
 	/* set the default size in case we do not get them from hid */
 	wacom_set_default_phy(features);