usb: gadget: renesas_usbhs: disable auto paket start on usbhs_pkt_push()

Automatically packet start by usbhs_pkt_push() was useful.
But the pushed packet will be called twice
if new packet was pushed on usbhs_pkt :: done callback.
(1st is called by usbhs_pkt_push(), 2nd is called by usbhsf_pkt_handler())

This patch disables automatic packet start,
and clarified packet start timing.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/renesas_usbhs/fifo.c

@@ -93,8 +93,6 @@ void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
 
 	usbhs_unlock(priv, flags);
 	/********************  spin unlock ******************/
-
-	usbhs_pkt_start(pipe);
 }
 
 static void __usbhsf_pkt_del(struct usbhs_pkt *pkt)

drivers/usb/renesas_usbhs/mod_gadget.c

@@ -165,6 +165,7 @@ static void usbhsg_queue_push(struct usbhsg_uep *uep,
 	req->status = -EINPROGRESS;
 	usbhs_pkt_push(pipe, pkt, usbhsg_queue_done,
 		       req->buf, req->length, req->zero);
+	usbhs_pkt_start(pipe);
 
 	dev_dbg(dev, "pipe %d : queue push (%d)\n",
 		usbhs_pipe_number(pipe),