FAILED: patch "[PATCH] hwmon: (it87) Ensure that pwm control cache is current before" failed to apply to 4.4-stable tree

The patch below does not apply to the 4.4-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From: Guenter Roeck <[email protected]>
Date: Wed, 8 Feb 2017 14:02:59 -0800
Subject: [PATCH] hwmon: (it87) Ensure that pwm control cache is current before
updating values

If sensor attributes were never read, the pwm control data has not been initiialized, which can cause wrong driver behavior. Ensure that cached data is current before acting on it.

index 11a28b233006..85918d8a747a 100644
@@ -1360,6 +1360,7 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 		return -EINVAL;
 
 	mutex_lock(&data->update_lock);
+	it87_update_pwm_ctrl(data, nr);
 	if (has_newer_autopwm(data)) {
 		/*
 		 * If we are in automatic mode, the PWM duty cycle register

@@ -1472,6 +1473,7 @@ static ssize_t set_pwm_temp_map(struct device *dev,
 	}
 
 	mutex_lock(&data->update_lock);
+	it87_update_pwm_ctrl(data, nr);
 	data->pwm_temp_map[nr] = reg;
 	/*
 	 * If we are in automatic mode, write the temp mapping immediately;