hwmon: (it87) Don't configure 16 bit fan counters it not necessary

On IT8728F, IT8771E, and IT8772E, fans counters are always 16 bit
and don't need to be configured for it.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index ed25e4b..e8cbefb 100644 (file)
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -2463,9 +2463,12 @@ static void it87_init_device(struct platform_device *pdev)
        }
        data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
 
-       /* Set tachometers to 16-bit mode if needed, IT8603E (and IT8728F?)
-        * has it by default */
-       if (has_16bit_fans(data) && data->type != it8603) {
+       /*
+        * Set tachometers to 16-bit mode if needed. IT8603E, IT8728F,
+        * IT8771E (guesswork), and IT8772E have it by default.
+        */
+       if (has_16bit_fans(data) && data->type != it8603 && data->type != it8728
+           && data->type != it8771 && data->type != it8772) {
                tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
                if (~tmp & 0x07 & data->has_fan) {
                        dev_dbg(&pdev->dev,