From ce603b18f30aea1216a00673a33805d4f5a5e16b Mon Sep 17 00:00:00 2001
From: Guenter Roeck <linux@roeck-us.net>
Date: Sat, 26 Jan 2013 15:15:37 -0800
Subject: [PATCH] hwmon: (pmbus) Add function to clear sensor cache

For PMBus chips, modifying one limit register may affect other limits.
Since limits are all cached in the PMBus core driver, related changes
are not reflected in reported limits.

Introduce function to clear the attribute cache. After calling this function,
the core pmbus driver re-reads all cached values.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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