From: Johan Hovold <johan@kernel.org>
Date: Thu, 12 Jan 2017 13:56:14 +0000 (+0100)
Subject: USB: serial: io_edgeport: fix descriptor error handling
X-Git-Tag: v3.2.89~89
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9742f5458d330a758b33a4aabd7c58fd378f145f;p=pandora-kernel.git

USB: serial: io_edgeport: fix descriptor error handling

commit 3c0e25d883d06a1fbd1ad35257e8abaa57befb37 upstream.

Make sure to detect short control-message transfers and log an error
when reading incomplete manufacturer and boot descriptors.

Note that the default all-zero descriptors will now be used after a
short transfer is detected instead of partially initialised ones.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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