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

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@leemhuis.info>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Cc: stable@vger.kernel.org # v4.0+, will need backport
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c
index c8487894b31236cefd761b24cac48fb4e17e6d52..c43318d3416e20a4d027a32402b1cf751718b8c6 100644 (file)
--- a/drivers/hwmon/dell-smm-hwmon.c
+++ b/drivers/hwmon/dell-smm-hwmon.c
@@ -930,6 +930,17 @@ static struct dmi_system_id i8k_dmi_table[] __initdata = {
 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