devfreq: exynos: Don't use OPP structures outside of RCU locks
authorViresh Kumar <viresh.kumar@linaro.org>
Thu, 1 Dec 2016 10:25:40 +0000 (15:55 +0530)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Thu, 8 Dec 2016 00:46:06 +0000 (01:46 +0100)
commitc8ce82b9b9c40d66709cce588f6281dd47cc3922
tree8734984b6eb9c2043e519d95e4e6906b96943953
parentc261e4c7153f307cd5f78ac6492da21ce7004310
devfreq: exynos: Don't use OPP structures outside of RCU locks

The OPP structures are abused to the best here, without understanding
how the OPP core and RCU locks work.

In short, the OPP pointer saved 'struct exynos_bus' can become invalid
under your nose, as the OPP core may free it.

Fix various abuses around OPP structures and calls.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/devfreq/exynos-bus.c