usb: isp1760: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: "Gustavo A. R. Silva" <garsilva@embeddedor.com>
Cc: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/isp1760/isp1760-udc.c b/drivers/usb/isp1760/isp1760-udc.c
index 69400f3..ad566f2 100644
--- a/drivers/usb/isp1760/isp1760-udc.c
+++ b/drivers/usb/isp1760/isp1760-udc.c
@@ -1331,9 +1331,9 @@ static irqreturn_t isp1760_udc_irq(int irq, void *dev)
 	return status ? IRQ_HANDLED : IRQ_NONE;
 }
 
-static void isp1760_udc_vbus_poll(unsigned long data)
+static void isp1760_udc_vbus_poll(struct timer_list *t)
 {
-	struct isp1760_udc *udc = (struct isp1760_udc *)data;
+	struct isp1760_udc *udc = from_timer(udc, t, vbus_timer);
 	unsigned long flags;
 
 	spin_lock_irqsave(&udc->lock, flags);
@@ -1452,8 +1452,7 @@ int isp1760_udc_register(struct isp1760_device *isp, int irq,
 	udc->regs = isp->regs;
 
 	spin_lock_init(&udc->lock);
-	setup_timer(&udc->vbus_timer, isp1760_udc_vbus_poll,
-		    (unsigned long)udc);
+	timer_setup(&udc->vbus_timer, isp1760_udc_vbus_poll, 0);
 
 	ret = isp1760_udc_init(udc);
 	if (ret < 0)