From 00f30d29b497577954b20237b405e9d22b5286c2 Mon Sep 17 00:00:00 2001
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Date: Mon, 16 Mar 2015 16:36:48 +0900
Subject: [PATCH] usb: renesas_usbhs: fix spinlock suspected in a gadget
 complete function

According to the gadget.h, a "complete" function will always be called
with interrupts disabled. However, sometimes usbhsg_queue_pop() function
is called with interrupts enabled. So, this function should be held by
usbhs_lock() to disable interruption. Also, this driver has to call
spin_unlock() to avoid spinlock recursion by this driver before calling
usb_gadget_giveback_request().
Otherwise, there is possible to cause a spinlock suspected in a gadget
complete function.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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