From: Johan Hovold <jhovold@gmail.com>
Date: Thu, 25 Oct 2012 08:29:15 +0000 (+0200)
Subject: USB: keyspan: fix NULL-pointer dereferences and memory leaks
X-Git-Tag: v3.7-rc3~11^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f79b2d0fe81eecb412dc48e87a119afc690da8e9;p=pandora-kernel.git

USB: keyspan: fix NULL-pointer dereferences and memory leaks

Fix NULL-pointer dereference at release by moving port data allocation
and deallocation to port_probe and port_remove.

Fix NULL-pointer dereference at disconnect by stopping port urbs at
port_remove.

Since commit 0998d0631001288 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer accessible at
disconnect or release.

Note that this patch also fixes port and interface-data memory leaks in
the error path of attach should port initialisation fail for any port.

Compile-only tested.

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