From e535d730f2c2d08198070b0d2c3bf8f354d3d511 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Pali=20Roh=C3=A1r?= Date: Thu, 30 Jul 2015 20:41:57 +0200 Subject: [PATCH] hwmon: (dell-smm) Blacklist Dell Studio XPS 8100 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit CPU fan speed going up and down on Dell Studio XPS 8100 for unknown reasons. Without further debugging on the affected machine, it is not possible to find the problem. Link: https://bugzilla.kernel.org/show_bug.cgi?id=100121 Signed-off-by: Pali Rohár Tested-by: Jan C Peters Cc: stable@vger.kernel.org # v4.0+, will need backport [groeck: cleaned up description, comments] Signed-off-by: Guenter Roeck --- drivers/hwmon/dell-smm-hwmon.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index 37c16afe007a0..c8487894b3123 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -929,6 +929,21 @@ 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 8100 + * for unknown reasons. + */ + .ident = "Dell Studio XPS 8100", + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Studio XPS 8100"), + }, + }, + { } +}; + /* * Probe for the presence of a supported laptop. */ @@ -940,7 +955,8 @@ static int __init i8k_probe(void) /* * Get DMI information */ - if (!dmi_check_system(i8k_dmi_table)) { + if (!dmi_check_system(i8k_dmi_table) || + dmi_check_system(i8k_blacklist_dmi_table)) { if (!ignore_dmi && !force) return -ENODEV; -- 2.39.5