From: Jiri Kosina <jkosina@suse.cz>
Date: Tue, 10 Jun 2014 09:05:43 +0000 (+0200)
Subject: HID: sensor-hub: make dyn_callback_lock IRQ-safe
X-Git-Tag: cleanup-for-v3.18~287^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ccf091d1fbc1f99bb7f93bff8cf346769a9b0cd;p=pandora-kernel.git

HID: sensor-hub: make dyn_callback_lock IRQ-safe

dyn_callback_lock is being taken from IRQ context through hid_irq_in() ->
hid_input_report() -> sensor_hub_raw_event() -> sensor_hub_get_callback(),
therefore anyone else acquiring it needs to disable IRQs to disable deadlocks.

Reported-by: Alexander Holler <holler@ahsoftware.de>
Tested-by: Alexander Holler <holler@ahsoftware.de>
Reported-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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