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Commitbb4a0f497b("ASoC: codecs: lpass: Drop unused AIF_INVALID first DAI identifier") removed first entry in enum with DAI identifiers, because it looked unused. Turns out that there is a relation between DAI ID and "RX_MACRO RX0 MUX"-like kcontrols which use "rx_macro_mux_text" array. That "rx_macro_mux_text" array used first three entries of DAI IDs enum, with value '0' being invalid. The value passed tp "RX_MACRO RX0 MUX"-like kcontrols was used as DAI ID and set to configure active channel count and mask, which are arrays indexed by DAI ID. After removal of first AIF_INVALID DAI identifier, this kcontrol was updating wrong entries in active channel count and mask arrays which was visible in reduced quality (distortions) during headset playback on the Qualcomm SM8750 MTP8750 board. It seems it also fixes recording silence (instead of actual sound) via headset, even though that's different macro codec. Reported-by: Alexey Klimov <alexey.klimov@linaro.org> Fixes:bb4a0f497b("ASoC: codecs: lpass: Drop unused AIF_INVALID first DAI identifier") Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com> Message-ID: <20250901074403.137263-2-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 reStructuredText 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.