ASoC: amd: acp: bounds-check SoundWire link ID in machine drivers

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Add a bounds check in create_sdw_dailink() to validate that the
SoundWire link ID derived from link_mask does not exceed the maximum
supported by the platform. If the link ID is out of range or link_mask
is zero, log an error and return -EINVAL to prevent accessing invalid
CPU pin ID tables.

Applied to both acp-sdw-sof-mach.c and acp-sdw-legacy-mach.c.

Fixes: 6d8348ddc5 ("ASoC: amd: acp: refactor SoundWire machine driver code")
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20260910161728.1452808-2-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Vijendar Mukunda 2026-09-10 21:46:46 +05:30 • committed by Mark Brown

parent fd73f4a665

commit 29218a4d11

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10

sound/soc/amd/acp/acp-sdw-legacy-mach.c

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9

sound/soc/amd/acp/acp-sdw-sof-mach.c

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