From: Bruno Prémont <bonbons@linux-vserver.org>
Date: Mon, 15 Mar 2010 18:00:27 +0000 (+0100)
Subject: HID: avoid '\0' in hid debugfs events file
X-Git-Tag: v2.6.34-rc2~20^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e639ba481b76e445df354acd6e29d859a9b1657f;p=pandora-kernel.git

HID: avoid '\0' in hid debugfs events file

When dumping /sys/kernel/debug/hid/$device/events '\0' characters show up
(invisible if cat to console but shown by less or while looking at a dump
 file).  These are due to hid_debug_event() adding strlen()+1 bytes to the ring
buffer (e.g. including the trailing '\0').  Any roll-over causes a '\0' as well
as hid_debug_event() handles the ring buffers with HID_DEBUG_BUFSIZE-1 size
while hid_debug_events_read() handles it with full HID_DEBUG_BUFSIZE size.

Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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