From: Lars-Peter Clausen <lars@metafoo.de>
Date: Thu, 11 Nov 2010 18:00:52 +0000 (+0100)
Subject: jz4740-battery: Protect against concurrent battery readings
X-Git-Tag: v2.6.37.1~127
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fcd8c1ff604201722610d43c01a1cf035e2ea273;p=pandora-kernel.git

jz4740-battery: Protect against concurrent battery readings

commit 8ec98fe0b4ffdedce4c1caa9fb3d550f52ad1c6b upstream.

We can not handle more then one ADC request at a time to the battery.
The patch adds a mutex around the ADC read code to ensure this.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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