Input: aiptek - stop saving struct usb_device

The device can now easily be derived from the interface.
Stop leaving a private copy.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/tablet/aiptek.c

@@ -307,7 +307,6 @@ struct aiptek_settings {
 
 struct aiptek {
 	struct input_dev *inputdev;		/* input device struct           */
-	struct usb_device *usbdev;		/* usb device struct             */
 	struct usb_interface *intf;		/* usb interface struct          */
 	struct urb *urb;			/* urb for incoming reports      */
 	dma_addr_t data_dma;			/* our dma stuffage              */
@@ -847,7 +846,7 @@ static int aiptek_open(struct input_dev *inputdev)
 {
 	struct aiptek *aiptek = input_get_drvdata(inputdev);
 
-	aiptek->urb->dev = aiptek->usbdev;
+	aiptek->urb->dev = interface_to_usbdev(aiptek->intf);
 	if (usb_submit_urb(aiptek->urb, GFP_KERNEL) != 0)
 		return -EIO;
 
@@ -873,8 +872,10 @@ aiptek_set_report(struct aiptek *aiptek,
 		  unsigned char report_type,
 		  unsigned char report_id, void *buffer, int size)
 {
-	return usb_control_msg(aiptek->usbdev,
-			       usb_sndctrlpipe(aiptek->usbdev, 0),
+	struct usb_device *udev = interface_to_usbdev(aiptek->intf);
+
+	return usb_control_msg(udev,
+			       usb_sndctrlpipe(udev, 0),
 			       USB_REQ_SET_REPORT,
 			       USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 			       USB_DIR_OUT, (report_type << 8) + report_id,
@@ -886,8 +887,10 @@ aiptek_get_report(struct aiptek *aiptek,
 		  unsigned char report_type,
 		  unsigned char report_id, void *buffer, int size)
 {
-	return usb_control_msg(aiptek->usbdev,
-			       usb_rcvctrlpipe(aiptek->usbdev, 0),
+	struct usb_device *udev = interface_to_usbdev(aiptek->intf);
+
+	return usb_control_msg(udev,
+			       usb_rcvctrlpipe(udev, 0),
 			       USB_REQ_GET_REPORT,
 			       USB_TYPE_CLASS | USB_RECIP_INTERFACE |
 			       USB_DIR_IN, (report_type << 8) + report_id,
@@ -1729,7 +1732,6 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	}
 
 	aiptek->inputdev = inputdev;
-	aiptek->usbdev = usbdev;
 	aiptek->intf = intf;
 	aiptek->ifnum = intf->altsetting[0].desc.bInterfaceNumber;
 	aiptek->inDelay = 0;
@@ -1833,8 +1835,8 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	 * input.
 	 */
 	usb_fill_int_urb(aiptek->urb,
-			 aiptek->usbdev,
-			 usb_rcvintpipe(aiptek->usbdev,
+			 usbdev,
+			 usb_rcvintpipe(usbdev,
 					endpoint->bEndpointAddress),
 			 aiptek->data, 8, aiptek_irq, aiptek,
 			 endpoint->bInterval);