From 29e20aa6c6aff35c81d4da2e2cd516dadb569061 Mon Sep 17 00:00:00 2001
From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Fri, 15 Aug 2014 03:00:06 +0400
Subject: [PATCH] at76c50x-usb: fix use after free on failure path in
 at76_probe()

After commit 174beab7d445 ("at76c50x-usb: Don't perform DMA from stack memory")
at76_delete_device() and usb_put_dev() are called both
if at76_init_new_device() fails in at76_probe().
But at76_delete_device() does usb_put_dev(priv->dev) itself
that means double usb_put_dev().

The patch avoids the problem by moving usb_put_dev() from
at76_delete_device() to at76_disconnect().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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