From f14e9ad17f46051b02bffffac2036486097de19e Mon Sep 17 00:00:00 2001
From: Rui Miguel Silva <rui.silva@linaro.org>
Date: Wed, 20 May 2015 14:52:40 +0100
Subject: [PATCH] usb: gadget: f_fs: add extra check before
 unregister_gadget_item

ffs_closed can race with configfs_rmdir which will call config_item_release, so
add an extra check to avoid calling the unregister_gadget_item with an null
gadget item.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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