This patch, in addition to 95d88d054ad9 that added Dell Precision 7510 to fan control whitelist, also adds Precision 7540 to the whitelist, which allows manual PWM control on Dell Precision 7540. It has been confirmed that the same SMM commands work to enable/disable manual PWM control on Dell Precision 7540. --- 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 44aaf9b9191d..f946257f72c6 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -1330,6 +1330,14 @@ static const struct dmi_system_id i8k_whitelist_fan_control[] __initconst = { }, .driver_data = (void *)&i8k_fan_control_data[I8K_FAN_34A3_35A3], }, + { + .ident = "Dell Precision 7540", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Precision 7540"), + }, + .driver_data = (void *)&i8k_fan_control_data[I8K_FAN_34A3_35A3], + }, { .ident = "Dell XPS 13 7390", .matches = { -- 2.42.0