[PATCH 2/2] hwmon: (dell-smm) Add Latitude 5420 to fan control whitelist

[Armin Wolf <W_Armin@gmx.de>]

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 <W_Armin@gmx.de>
---
 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 = {
-- 
2.39.5