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hwmon: (dell-smm) Disable fan support for Dell Vostro 3360
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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>
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Oleksandr Natalenko authored and Guenter Roeck committed Jan 27, 2018
1 parent f480ea9 commit 6fbc423
Showing 1 changed file with 7 additions and 0 deletions.
7 changes: 7 additions & 0 deletions drivers/hwmon/dell-smm-hwmon.c
Original file line number Diff line number Diff line change
Expand Up @@ -1067,6 +1067,13 @@ static struct dmi_system_id i8k_blacklist_fan_support_dmi_table[] __initdata = {
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"),
},
},
{
.ident = "Dell Vostro 3360",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Vostro 3360"),
},
},
{ }
};

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