From: Bruno Prémont <bonbons@linux-vserver.org>
Date: Sun, 19 Aug 2012 17:31:23 +0000 (+0200)
Subject: HID: picoLCD: prevent NULL pointer dereferences
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~104^2~2^4~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a5785cc0101928663c8ed89f42afea719aecee09;p=pandora-kernel.git

HID: picoLCD: prevent NULL pointer dereferences

Driver code expects to get access to struct picolcd_data from hiddev
and is not prepared to find a NULL pointer there. Most prominent
candidate to trip on it is picolcd_fb_deferred_io().
Delay removing struct picolcd_data from hiddev until all sub-devices
have been unregistered.

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