From: Johan Hovold <johan@kernel.org>
Date: Thu, 12 Jan 2017 13:56:22 +0000 (+0100)
Subject: USB: serial: ssu100: fix control-message error handling
X-Git-Tag: v3.2.89~87
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=480810392ec9de0e3303c681f30d41cc0e08d985;p=pandora-kernel.git

USB: serial: ssu100: fix control-message error handling

commit 1eac5c244f705182d1552a53e2f74e2775ed95d6 upstream.

Make sure to detect short control-message transfers rather than continue
with zero-initialised data when retrieving modem status and during
device initialisation.

Fixes: 52af95459939 ("USB: add USB serial ssu100 driver")
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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