From: Peter Wu <peter@lekensteyn.nl>
Date: Thu, 11 Dec 2014 12:51:18 +0000 (+0100)
Subject: HID: logitech-hidpp: check name retrieval return code
X-Git-Tag: omap-for-v3.20/drop-legacy-3517~109^2^5~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1430ee73b566a30bc210501d1e0e99c519707f1e;p=pandora-kernel.git

HID: logitech-hidpp: check name retrieval return code

hidpp_devicenametype_get_device_name() may return a negative value on
protocol errors (for example, when the device is powered off).
Explicitly check this condition to avoid a long-running loop.

(0 cannot be returned as __name_length - index > 0, but check for it
anyway as it would otherwise result in an infinite loop.)

Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---

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