4.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Guenter Roeck <linux@xxxxxxxxxxxx> commit d66777caa57ffade6061782f3a4d4056f0b0c1ac upstream. pwm4 is enabled if bit 2 of GPIO control register 4 is disabled, not when it is enabled. Since the check is for the skip condition, it is reversed. This applies to both IT8620 and IT8628. Fixes: 36c4d98a7883d ("hwmon: (it87) Add support for all pwm channels ...") Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/hwmon/it87.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -2600,7 +2600,7 @@ static int __init it87_find(int sioaddr, /* Check for pwm4 */ reg = superio_inb(sioaddr, IT87_SIO_GPIO4_REG); - if (!(reg & BIT(2))) + if (reg & BIT(2)) sio_data->skip_pwm |= BIT(3); /* Check for pwm2, fan2 */