From: Helge Eichelberg <kernelorg@elchenberg.name>
Date: Tue, 5 Jun 2018 17:38:32 +0000 (+0200)
Subject: hwmon: (dell-smm) Disable fan support for Dell XPS13 9333
X-Git-Tag: v4.17.19~309
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e1f511665fd9aa28500b5b901fb428d0c65f7480;p=thirdparty%2Fkernel%2Fstable.git

hwmon: (dell-smm) Disable fan support for Dell XPS13 9333

[ Upstream commit 536e0019b7da4eb3badb4da5acbb70ae29e1b5ef ]

Calling fan related SMM functions implemented by Dell BIOS firmware on Dell
XPS13 9333 freeze kernel for about 500ms. Until Dell fixes it we need to
disable fan support for Dell XPS13 9333.

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

Link: https://bugzilla.kernel.org/show_bug.cgi?id=195751
Signed-off-by: Helge Eichelberg <kernelorg@elchenberg.name>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c
index bf3bb7e1adab8..9d3ef879dc51e 100644
--- a/drivers/hwmon/dell-smm-hwmon.c
+++ b/drivers/hwmon/dell-smm-hwmon.c
@@ -1074,6 +1074,13 @@ static struct dmi_system_id i8k_blacklist_fan_support_dmi_table[] __initdata = {
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Vostro 3360"),
 		},
 	},
+	{
+		.ident = "Dell XPS13 9333",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "XPS13 9333"),
+		},
+	},
 	{ }
 };