Patch "hwmon: (it87) Ensure that pwm control cache is current before updating values" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

hwmon: (it87) Ensure that pwm control cache is current before updating values

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
hwmon-it87-ensure-that-pwm-control-cache-is-current-before-updating-values.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

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

From: Guenter Roeck <[email protected]>

commit 82dbe987b70042b340f851bdc969a971081e5f02 upstream.

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.

---
 drivers/hwmon/it87.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -1354,6 +1354,7 @@ static ssize_t set_pwm(struct device *de
 		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

@@ -1466,6 +1467,7 @@ static ssize_t set_pwm_temp_map(struct d
 	}
 
 	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;

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/hwmon-it87-ensure-that-pwm-control-cache-is-current-before-updating-values.patch queue-4.9/hwmon-it87-do-not-overwrite-bit-2..6-of-pwm-control-registers.patch