From: Guenter Roeck <linux@roeck-us.net>
Date: Thu, 4 Dec 2014 17:58:15 +0000 (-0800)
Subject: hwmon: (lm75) Strengthen detect function
X-Git-Tag: omap-for-v3.19/fixes-for-merge-window~25^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4ad40cc568c5537de11092d3362f9cb287f915d9;p=pandora-kernel.git

hwmon: (lm75) Strengthen detect function

A chip returning 0x00 in all registers is erroneously detected
as LM75. Check hysteresis and temperature limit registers and
abort if both are 0 to reduce the likelyhood for this to happen.

Reviewed-by: Rob Coulson <rob.coulson@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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