hwmon: (dell-smm) Disable fan support for Dell Vostro 3360
authorOleksandr Natalenko <oleksandr@natalenko.name>
Sat, 27 Jan 2018 16:23:29 +0000 (17:23 +0100)
committerGuenter Roeck <linux@roeck-us.net>
Sat, 27 Jan 2018 17:34:22 +0000 (09:34 -0800)
commit6fbc4232a5ac944531bda397f3644d1cf66bdd13
tree9fddc8cc01160380d9a31a744e621ab49204d0c7
parentf480ea90b9dd7dfcf9031c82abc294f86d7db435
hwmon: (dell-smm) Disable fan support for Dell Vostro 3360

Calling fan related SMM functions implemented by Dell BIOS firmware on Dell
Vostro 3360 freeze kernel for about 500ms.

Unfortunately, it is unlikely for Dell to fix this since the machine
is pretty old, so this commit just disables fan support to make the
system usable again.

Via "force" module param fan support can be enabled.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=195751
Link: http://lkml.iu.edu/hypermail/linux/kernel/1711.2/06083.html
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
drivers/hwmon/dell-smm-hwmon.c