From e9f2aa871c732acfe29c3ba5e6b541b2aa786778 Mon Sep 17 00:00:00 2001
From: Felipe Balbi <balbi@ti.com>
Date: Tue, 27 Jan 2015 13:49:28 -0600
Subject: [PATCH] usb: dwc3: gadget: WARN() in case of unknown IRQ

if an unknown IRQ event is triggered, that means
the HW is really misbehaving. Instead of printing
a debug message, let's WARN() so users report
when that happens.

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