The current loops at the top of create_sdw_dailink process the devices on each link starting from device index adr_index. But adr_index is only meaningful on the first on these SoundWire links, as it is the index of the current device on that link. This means devices will be skipped on later links. Say for example the system looks like this: SDW0 - Codec (Not Aggregated), Amp 1 (Aggregated, Group 1) SDW1 - Amp 2 (Aggregated, Group 1), Amp 3 (Aggregated, Group 1) The code should create 2 DAI links, one for the CODEC and one for the aggregated amps. It will create the DAI link for the codec no problem. When it creates the DAI link for Group 1 however, create_sdw_dailink will be called with an adr_index of 1, since that is the index of Amp 1 on SDW0. However, as the loop in create_sdw_dailink moves onto SDW1 it will again start from adr_index, skipping Amp 2. Resulting in the amp DAI link only have amps 1 and 3 in it. It is reasonable to start at adr_index on the first link, since earlier devices have by definition already been processed. However, update the code when processing later links to handle all devices. Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20230808132013.889419-9-ckeepax@opensource.cirrus.com 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.
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