hwmon: (it87) Ensure that pwm control cache is current before updating values
authorGuenter Roeck <linux@roeck-us.net>
Wed, 8 Feb 2017 22:02:59 +0000 (14:02 -0800)
committerGuenter Roeck <linux@roeck-us.net>
Sat, 11 Feb 2017 05:35:08 +0000 (21:35 -0800)
commit82dbe987b70042b340f851bdc969a971081e5f02
tree19558b051636f6c370f1bf5a452b971c64ff0655
parent638c1c07f99b752c14502009b50ffe4dd4de5ae2
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.

Cc: stable@vger.kernel.org # 4.4+
Reported-by: Kevin Folz <kfolz@evertz.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
drivers/hwmon/it87.c