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81c4d8a3c4
The dev_pm_opp_set_rate() helper needs to know the currently programmed OPP to make few decisions and currently we try to find it on every invocation of this routine. Lets start keeping track of the current_opp programmed for the devices of the opp table, that will be quite useful going forward. If we fail to find the current OPP, we pick the first one available in the list, as the list is in ascending order of frequencies, level, or bandwidth and that's the best guess we can make anyway. Note that we used to do the frequency comparison a bit early in dev_pm_opp_set_rate() previously, and now instead we check the target opp, which shall be more accurate anyway. We need to make sure that current_opp's memory doesn't get freed while it is being used and so we keep a reference of it until the time it is used. Now that current_opp will always be set, we can drop some unnecessary checks as well. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Dmitry Osipenko <digetx@gmail.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.