linux/drivers/devfreq/devfreq.c, branch v5.3

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55Z

Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

PM / devfreq: add tracing for scheduling work

2019-04-16T00:29:18Z

This patch add basic tracing of the devfreq workqueue and delayed work. It aims to capture changes of the polling intervals and device state. Signed-off-by: Lukasz Luba Reviewed-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: Fix static checker warning in try_then_request_governor

2019-04-16T00:29:18Z

The patch 23c7b54ca1cd: "PM / devfreq: Fix devfreq_add_device() when drivers are built as modules." leads to the following static checker warning: drivers/devfreq/devfreq.c:1043 governor_store() warn: 'governor' can also be NULL The reason is that the try_then_request_governor() function returns both error pointers and NULL. It should just return error pointers, so fix this by returning a ERR_PTR to the error intead of returning NULL. Fixes: 23c7b54ca1cd ("PM / devfreq: Fix devfreq_add_device() when drivers are built as modules.") Reported-by: Dan Carpenter Signed-off-by: Enric Balletbo i Serra Reviewed-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: Restart previous governor if new governor fails to start

2019-04-16T00:29:18Z

If the new governor fails to start, switch back to old governor so that the devfreq state is not left in some weird limbo. [Myungjoo: assume fatal on revert failure and set df->governor to NULL] Signed-off-by: Sibi Sankar Signed-off-by: Saravana Kannan Reviewed-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: consistent indentation

2019-04-16T00:29:18Z

Following up with complaints on inconsistent indentation from Yangtao Li, this fixes indentation inconsistency. In principle, this tries to put arguments aligned to the left including the first argument except for the case where the first argument is on the far-right side. Signed-off-by: MyungJoo Ham Reviewed-by: Chanwoo Choi Acked-by: Yangtao Li

PM / devfreq: fix missing check of return value in devfreq_add_device()

2019-04-16T00:29:18Z

devm_kzalloc() could fail, so insert a check of its return value. And if it fails, returns -ENOMEM. Signed-off-by: Yangtao Li Signed-off-by: MyungJoo Ham

PM / devfreq: fix mem leak in devfreq_add_device()

2019-04-16T00:29:18Z

'devfreq' is malloced in devfreq_add_device() and should be freed in the error handling cases, otherwise it will cause memory leak. Signed-off-by: Yangtao Li Signed-off-by: MyungJoo Ham

PM / devfreq: add devfreq_suspend/resume() functions

2018-12-11T02:40:13Z

This patch adds implementation for global suspend/resume for devfreq framework. System suspend will next use these functions. Suggested-by: Tobias Jakobi Suggested-by: Chanwoo Choi Signed-off-by: Lukasz Luba Reviewed-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: add support for suspend/resume of a devfreq device

2018-12-11T02:09:47Z

The patch prepares devfreq device for handling suspend/resume functionality. The new fields will store needed information during this process. Devfreq framework handles opp-suspend DT entry and there is no need of modyfications in the drivers code. It uses atomic variables to make sure no race condition affects the process. Suggested-by: Tobias Jakobi Suggested-by: Chanwoo Choi Signed-off-by: Lukasz Luba Reviewed-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: refactor set_target frequency function

2018-12-11T02:09:44Z

The refactoring is needed for the new client in devfreq: suspend. To avoid code duplication, move it to the new local function devfreq_set_target. Suggested-by: Tobias Jakobi Suggested-by: Chanwoo Choi Reviewed-by: Chanwoo Choi Signed-off-by: Lukasz Luba Signed-off-by: MyungJoo Ham