From e5f68b4a3e7b006f209aba078d6a5ff3a78dd783 Mon Sep 17 00:00:00 2001
From: Felipe Balbi <balbi@ti.com>
Date: Mon, 12 Oct 2015 13:25:44 -0500
Subject: Revert "usb: dwc3: gadget: remove unnecessary _irqsave()"

This reverts commit 70f3a9caa11665e9f9aace581d85d8483716a4c8.

That commit was causing a lockdep splat with g_ether and that
was interfering with proper functionality.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index cca806e..81bfb9a 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2642,15 +2642,16 @@ static irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc, u32 buf)
 static irqreturn_t dwc3_thread_interrupt(int irq, void *_dwc)
 {
 	struct dwc3 *dwc = _dwc;
+	unsigned long flags;
 	irqreturn_t ret = IRQ_NONE;
 	int i;
 
-	spin_lock(&dwc->lock);
+	spin_lock_irqsave(&dwc->lock, flags);
 
 	for (i = 0; i < dwc->num_event_buffers; i++)
 		ret |= dwc3_process_event_buf(dwc, i);
 
-	spin_unlock(&dwc->lock);
+	spin_unlock_irqrestore(&dwc->lock, flags);
 
 	return ret;
 }
-- 
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