user/sven/linux.git/drivers/devfreq/devfreq.c, branch v4.0.3

PM / devfreq: Export helper functions for drivers

2014-09-29T11:22:22Z

These functions are indended for use by drivers and should be available also when the driver is built as a module. Cc: MyungJoo Ham Cc: Kyungmin Park Signed-off-by: Ãrjan Eide Signed-off-by: MyungJoo Ham

PM / devfreq: Add devm_devfreq_{register,unregister}_opp_notfier function

2014-05-24T13:33:41Z

This patch add resource-managed function for devfreq opp as following functions. The devm_devfreq_register_opp_notifier() manages automatically the registration of devfreq opp using device resource management. - devm_devfreq_register_opp_notifier - devm_devfreq_unregister_opp_notifier() Signed-off-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: Add resource-managed function for devfreq device

2014-05-24T13:33:38Z

This patch add resource-managed function for devfreq device as following functions. The devm_devfreq_add_device() manages automatically the memory of devfreq device using device resource management. - devm_devfreq_add_device() - devm_devfreq_remove_device() Signed-off-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: Fix devfreq_remove_device() to improve the sequence of resource free

2014-05-24T13:33:34Z

This patch modify devfreq_remove_device() to improve the sequence of resource free. If executing existing devfreq_remove_device(), this function always executes _remove_devfreq() twice. In result, second _remove_devfreq() always return error value. So, This patch resolves complicated function sequence as following: [Flow sequence before modification] devfreq_remove_device() _remove_devfreq(devfreq, false) kfree(devfreq); /* Free devfreq */ if (!skip ...) { /* skip is false */ device_unregister(&devfreq->dev) put_device(&devfreq->dev); ... dev->release() devfreq_dev_release() _remove_devfreq(devfreq, true) <- Recall to free devfreq /* * Always return error without freeing resource because * already _remove_devfreq() frees the memory of devfreq. */ } [Flow sequence after modification] devfreq_remove_device device_unregister(&devfreq->dev) put_device(&devfreq->dev); .. dev->release() devfreq_dev_release() _remove_devfreq() kfree(devfreq); /* Free devfreq */ Signed-off-by: Chanwoo Choi [Merge conflict resolved by MyungJoo] Signed-off-by: MyungJoo Ham

PM / devfreq: Rewrite devfreq_update_status() to fix multiple bugs

2014-03-21T02:16:30Z

The current devfreq_update_status() has the following bugs: - If previous frequency doesn't have a valid level, it does an out of bounds access into the trans_table and causes memory corruption. - When the new frequency doesn't have a valid level, the time spent in the new frequency is counted towards the next valid frequency switch instead of being ignored. - The time spent on the previous frequency is added to the new frequency's stats instead of the previous frequency's stats. This patch fixes all of this. Signed-off-by: Saravana Kannan Signed-off-by: MyungJoo Ham

Merge branch 'pm-devfreq'

2013-11-07T18:24:20Z

* pm-devfreq: PM / devfreq: create_freezable_workqueue() doesn't return an ERR_PTR PM / devfreq: Remove duplicate header file inclusion in exynos5_bus.c PM / devfreq: Use devm_* APIs in exynos5_bus.c PM / devfreq: Remove redundant platform_set_drvdata() in exynos5_bus.c PM / devfreq: Fix incorrect usage of IS_ERR_OR_NULL in exynos5_bus.c

PM / devfreq: create_freezable_workqueue() doesn't return an ERR_PTR

2013-10-28T11:18:30Z

The create_freezable_workqueue() function returns a NULL on error and not an ERR_PTR. Signed-off-by: Dan Carpenter Signed-off-by: MyungJoo Ham

PM / OPP: rename header to linux/pm_opp.h

2013-10-25T20:33:23Z

Since Operating Performance Points (OPP) functions are specific to device specific power management, be specific and rename opp.h to pm_opp.h Reported-by: Randy Dunlap Signed-off-by: Nishanth Menon Signed-off-by: Rafael J. Wysocki

PM / OPP: rename data structures to dev_pm equivalents

2013-10-25T20:33:23Z

Since Operating Performance Points (OPP) data structures are specific to device specific power management, be specific and rename opp_* data structures in OPP library with dev_pm_opp_* equivalent. Affected structures are: struct opp enum opp_event Minor checkpatch warning resulting of this change was fixed as well. Reported-by: Randy Dunlap Signed-off-by: Nishanth Menon Signed-off-by: Rafael J. Wysocki

PM / OPP: rename functions to dev_pm_opp*

2013-10-25T20:33:23Z

Since Operating Performance Points (OPP) functions are specific to device specific power management, be specific and rename opp_* accessors in OPP library with dev_pm_opp_* equivalent. Affected functions are: opp_get_voltage opp_get_freq opp_get_opp_count opp_find_freq_exact opp_find_freq_floor opp_find_freq_ceil opp_add opp_enable opp_disable opp_get_notifier opp_init_cpufreq_table opp_free_cpufreq_table Reported-by: Randy Dunlap Signed-off-by: Nishanth Menon Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki