From: Johan Hovold <jhovold@gmail.com>
Date: Mon, 26 May 2014 17:23:16 +0000 (+0200)
Subject: USB: usb_wwan: fix urb leak at shutdown
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~34^2~115
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=79eed03e77d481b55d85d1cfe5a1636a0d3897fd;p=pandora-kernel.git

USB: usb_wwan: fix urb leak at shutdown

The delayed-write queue was never emptied at shutdown (close), something
which could lead to leaked urbs if the port is closed before being
runtime resumed due to a write.

When this happens the output buffer would not drain on close
(closing_wait timeout), and after consecutive opens, writes could be
corrupted with previously buffered data, transfered with reduced
throughput or completely blocked.

Note that unbusy_queued_urb() was simply moved out of CONFIG_PM.

Fixes: 383cedc3bb43 ("USB: serial: full autosuspend support for the
option driver")

Cc: <stable@vger.kernel.org>	# v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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