tree 58141870b6398365cb1a4b7a98e0b94161e0c0b3
parent e79e72c5a242fa21c971cfb40017f1039daf4d77
author Wolfram Sang <wsa+renesas@sang-engineering.com> 1450292718 +0100
committer Wolfram Sang <wsa@the-dreams.de> 1450522837 +0100

i2c: rcar: disable runtime PM correctly in slave mode

When we also are I2C slave, we need to disable runtime PM because the
address detection mechanism needs to be active all the time. However, we
can reenable runtime PM once the slave instance was unregistered. So,
use pm_runtime_get_sync/put to achieve this, since it has proper
refcounting. pm_runtime_allow/forbid is like a global knob controllable
from userspace which is unsuitable here.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org