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Currently the Qualcomm Soundwire controller in its DAI startup op allocates the Soundwire stream runtime. This works fine for existing designs, but has limitations for stream runtimes with multiple controllers, like upcoming Qualcomm X1E80100 SoC with four WSA8840 speakers on two Soundwire controllers. When two Soundwire controllers are added to sound card codecs, Soundwire startup() is called twice, one for each Soundwire controller, and second execution overwrites what was set before. During shutdown() this causes double free. It is expected to have only one Soundwire stream runtime, thus it should be allocated from SoC soundcard context startup(), not from each Soundwire startup(). Such way will properly handle both cases: one and two Soundwire controllers in the stream runtime. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20231128165638.757665-2-krzysztof.kozlowski@linaro.org Signed-off-by: Mark Brown <broonie@kernel.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.