From f198ead21bcb7b03d7bb2cba7ba0f5ad615a3862 Mon Sep 17 00:00:00 2001
From: Felipe Balbi <balbi@ti.com>
Date: Sat, 27 Aug 2011 15:10:09 +0300
Subject: [PATCH] usb: dwc3: gadget: set request dma to invalid when unmapping

if we don't set DMA address to invalid when unmapping,
we might fall in a situation where request buffer
can't be mapped to DMA again.

Signed-off-by: Felipe Balbi <balbi@ti.com>
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Reading git-format-patch failed