From eeb6b0c7551b439fe0b5a188b7732a2c06609705 Mon Sep 17 00:00:00 2001 From: Armin Wolf Date: Tue, 1 Sep 2026 20:18:49 +0200 Subject: [PATCH] hwmon: (dell-smm) Add Latitude 5420 to fan control whitelist MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit A user reported that the Dell Latitude 5420 needs to be whitelisted for the special SMM calls necessary for globally enabling/disabling BIOS fan control. Reported-by: pp12313124124@gmail.com Closes: https://bugzilla.kernel.org/show_bug.cgi?id=221935 Signed-off-by: Armin Wolf Link: https://patch.msgid.link/20260901181849.241776-2-W_Armin@gmx.de Acked-by: Pali Rohár Signed-off-by: Guenter Roeck --- drivers/hwmon/dell-smm-hwmon.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index a3aa398a9f8f..7ed94a3db621 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -1543,6 +1543,14 @@ static const struct dmi_system_id i8k_whitelist_fan_control[] __initconst = { }, .driver_data = (void *)&i8k_fan_control_data[I8K_FAN_34A3_35A3], }, + { + .ident = "Dell Latitude 5420", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Latitude 5420"), + }, + .driver_data = (void *)&i8k_fan_control_data[I8K_FAN_30A3_31A3], + }, { .ident = "Dell Latitude 5480", .matches = {