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commit1e5907bcb3upstream. Because the PWR_CTRL field is modeled as the power state of the DAC widget, and at the same time it is used to implement mute/unmute, we need some additional book-keeping to have the right end result no matter the sequence of calls. Without this fix, one can mute an ongoing stream by toggling a speaker pin control. Fixes:1a476abc72("tas2770: add tas2770 smart PA kernel driver") Signed-off-by: Martin Povišer <povik+lin@cutebit.org> Link: https://lore.kernel.org/r/20220808141246.5749-5-povik+lin@cutebit.org Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.