[4.2.y-ckt stable] Patch "hwmon: (dell-smm) Blacklist Dell Studio XPS 8000" has been added to the 4.2.y-ckt tree

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    hwmon: (dell-smm) Blacklist Dell Studio XPS 8000

to the linux-4.2.y-queue branch of the 4.2.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-4.2.y-queue

This patch is scheduled to be released in version 4.2.8-ckt4.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 4.2.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

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>From 50982302ea67b69a543ee39b78e9cbe24581952b Mon Sep 17 00:00:00 2001
From: Thorsten Leemhuis <linux at leemhuis.info>
Date: Sun, 17 Jan 2016 16:03:04 +0100
Subject: hwmon: (dell-smm) Blacklist Dell Studio XPS 8000
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

commit 6220f4ebd7b4db499238c2dc91268a9c473fd01c upstream.

Since Linux 4.0 the CPU fan speed is going up and down on Dell Studio
XPS 8000 and 8100 for unknown reasons. The 8100 was already
blacklisted in commit a4b45b25f18d ("hwmon: (dell-smm) Blacklist
Dell Studio XPS 8100"). This patch blacklists the XPS 8000.

Without further debugging on the affected machine, it is not possible
to find the problem. For more details see
https://bugzilla.kernel.org/show_bug.cgi?id=100121

Signed-off-by: Thorsten Leemhuis <linux at leemhuis.info>
Acked-by: Pali Rohár <pali.rohar at gmail.com>
Signed-off-by: Guenter Roeck <linux at roeck-us.net>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/hwmon/dell-smm-hwmon.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c
index c848789..c43318d 100644
--- a/drivers/hwmon/dell-smm-hwmon.c
+++ b/drivers/hwmon/dell-smm-hwmon.c
@@ -932,6 +932,17 @@ MODULE_DEVICE_TABLE(dmi, i8k_dmi_table);
 static struct dmi_system_id i8k_blacklist_dmi_table[] __initdata = {
 	{
 		/*
+		 * CPU fan speed going up and down on Dell Studio XPS 8000
+		 * for unknown reasons.
+		 */
+		.ident = "Dell Studio XPS 8000",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Studio XPS 8000"),
+		},
+	},
+	{
+		/*
 		 * CPU fan speed going up and down on Dell Studio XPS 8100
 		 * for unknown reasons.
 		 */
--
1.9.1