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5a119551b6Merge series from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:
This patchset improves the pm_runtime behavior in rare corner cases
identified by the Intel CI in the last 6 months.
a) in stress-tests, it's not uncommon to see the following type of
warnings when the codec reports as ATTACHED
"rt711 sdw:0:025d:0711:00: runtime PM trying to activate child device
sdw:0:025d:0711:00 but parent (sdw-master-0) is not active"
This warning was not correlated with any functional issue, but it
exposed a design issue on when to enable pm_runtime. The recommended
practice in the pm_runtime documentation is to keep the devices in
'suspended' mode and mark them as 'active' when they are really
functional.
b) enabling pm_runtime when the codec reports as ATTACHED also creates
a problematic case when the ASoC pm_runtime_get_sync() will silently
fail due to the -EACCESS error handling. This can happen when playback
starts before the codec is enumerated.
This patchset modifies the initial stages so that codecs are
pm_runtime enabled in the .probe() callback, but become pm_runtime
'active' only when they report present. This is better aligned with
the design of the pm_runtime helpers and improved CI results
significantly.
This patchset modifies all existing SoundWire codecs (except Qualcomm
ones), but the pattern of changes is exactly the same in all patches.
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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.