From 6fbc4232a5ac944531bda397f3644d1cf66bdd13 Mon Sep 17 00:00:00 2001 From: Oleksandr Natalenko Date: Sat, 27 Jan 2018 17:23:29 +0100 Subject: [PATCH] hwmon: (dell-smm) Disable fan support for Dell Vostro 3360 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Oleksandr Natalenko Signed-off-by: Guenter Roeck --- drivers/hwmon/dell-smm-hwmon.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index 3f8b4e482b64..bf3bb7e1adab 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -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"), + }, + }, { } }; -- 2.30.2