[RFC 2/2] HID: multitouch: remove last usb dependency

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hid-multitouch used to direclty call for a set_idle in the .resume()
callback. With the new hid_hw_idle(), this can be dropped and
hid-multitouch is now freed from its transport layer.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
---
 drivers/hid/hid-multitouch.c | 17 +----------------
 1 file changed, 1 insertion(+), 16 deletions(-)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 51d8938..1f544a4 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -896,26 +896,11 @@ static int mt_reset_resume(struct hid_device *hdev)
 
 static int mt_resume(struct hid_device *hdev)
 {
-	struct usb_interface *intf;
-	struct usb_host_interface *interface;
-	struct usb_device *dev;
-
-	if (hdev->bus != BUS_USB)
-		return 0;
-
-	intf = to_usb_interface(hdev->dev.parent);
-	interface = intf->cur_altsetting;
-	dev = interface_to_usbdev(intf);
-
 	/* Some Elan legacy devices require SET_IDLE to be set on resume.
 	 * It should be safe to send it to other devices too.
 	 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
 
-	usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
-			HID_REQ_SET_IDLE,
-			USB_TYPE_CLASS | USB_RECIP_INTERFACE,
-			0, interface->desc.bInterfaceNumber,
-			NULL, 0, USB_CTRL_SET_TIMEOUT);
+	hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
 
 	return 0;
 }
-- 
1.8.1.2

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