This patch updates dev_pm_opp_find_freq_*() routines to get a reference to the OPPs returned by them.

Also updates the users of dev_pm_opp_find_freq_*() routines to call dev_pm_opp_put() after they are done using the OPPs.

As it is guaranteed the that OPPs wouldn't get freed while being used, the RCU read side locking present with the users isn't required anymore. Drop it as well.

This patch also updates all users of devfreq_recommended_opp() which was returning an OPP received from the OPP core.

Note that some of the OPP core routines have gained rcu_read_{lock|unlock}() calls, as those still use RCU specific APIs within them.

Signed-off-by: Viresh Kumar viresh.kumar@linaro.org Reviewed-by: Chanwoo Choi cw00.choi@samsung.com [Devfreq]

This patch gets a lot of fails during application.

For devfreq-side, I've got: error: drivers/devfreq/devfreq.c: patch does not apply error: patch failed: drivers/devfreq/exynos-bus.c:103 error: drivers/devfreq/exynos-bus.c: patch does not apply error: patch failed: drivers/devfreq/governor_passive.c:59 error: drivers/devfreq/governor_passive.c: patch does not apply error: patch failed: drivers/devfreq/rk3399_dmc.c:91 error: drivers/devfreq/rk3399_dmc.c: patch does not apply error: patch failed: drivers/devfreq/tegra-devfreq.c:487 error: drivers/devfreq/tegra-devfreq.c: patch does not apply

With the condition that you are going to properly rebase the patch, you may add "Reviewed-by" from me. (the code itself looks fine.)

Cheers, MyungJoo

---

arch/arm/mach-omap2/pm.c | 5 +- drivers/base/power/opp/core.c | 114 +++++++++++++++++++---------------- drivers/base/power/opp/cpu.c | 22 ++----- drivers/clk/tegra/clk-dfll.c | 17 ++---- drivers/cpufreq/exynos5440-cpufreq.c | 5 +- drivers/cpufreq/imx6q-cpufreq.c | 10 +-- drivers/cpufreq/mt8173-cpufreq.c | 8 +-- drivers/cpufreq/omap-cpufreq.c | 4 +- drivers/devfreq/devfreq.c | 14 ++--- drivers/devfreq/exynos-bus.c | 14 ++--- drivers/devfreq/governor_passive.c | 4 +- drivers/devfreq/rk3399_dmc.c | 16 ++--- drivers/devfreq/tegra-devfreq.c | 4 +- drivers/thermal/cpu_cooling.c | 11 +--- drivers/thermal/devfreq_cooling.c | 15 ++--- 15 files changed, 110 insertions(+), 153 deletions(-)