From: Pali Rohár Date: Tue, 18 Nov 2014 14:56:54 +0000 (+0100) Subject: i8k: Fix temperature bug handling in i8k_get_temp() X-Git-Tag: omap-for-v3.20/drop-legacy-3517~81^2~5 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=723493ca59c8d81fed3e7f261165fee493a29ffa;p=pandora-kernel.git i8k: Fix temperature bug handling in i8k_get_temp() Static array prev[] was incorrectly initialized. It should be initialized to some "invalid" temperature value (above I8K_MAX_TEMP). Next, function should store "invalid" value to prev[] (above I8K_MAX_TEMP), not valid (= I8K_MAX_TEMP) because whole temperature bug handling will not work. And last part, to not break existing detection of temperature sensors, register them also if i8k report too high temperature (above I8K_MAX_TEMP). This is needed because some sensors are sometimes turned off (e.g sensor on GPU which can be turned off/on) and in this case SMM report too high value. To prevent reporting "invalid" values to userspace, return -EINVAL. In this case sensors which are currently turned off (e.g optimus/powerexpress/enduro gpu) are reported as "N/A" by lm-sensors package. Signed-off-by: Pali Rohár Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed