From: Arnd Bergmann arnd@arndb.de
The soundwire-amd driver has a bit of a layering violation requiring the SOF driver to directly call into its exported symbols rather than through an abstraction.
The SND_SOC_SOF_AMD_SOUNDWIRE Kconfig symbol tries to deal with the dependency by selecting SOUNDWIRE_AMD in a complicated set of conditions, but gets it wrong for a configuration involving SND_SOC_SOF_AMD_COMMON=y, SND_SOC_SOF_AMD_ACP63=m, and SND_SOC_SOF_AMD_SOUNDWIRE_LINK_BASELINE=m SOUNDWIRE_AMD=m, which results in a link failure:
ld.lld: error: undefined symbol: sdw_amd_get_slave_info
referenced by acp-common.c
ld.lld: error: undefined symbol: amd_sdw_scan_controller ld.lld: error: undefined symbol: sdw_amd_probe ld.lld: error: undefined symbol: sdw_amd_exit
referenced by acp.c sound/soc/sof/amd/acp.o:(amd_sof_acp_remove) in archive vmlinux.a
In essence, the SND_SOC_SOF_AMD_COMMON option cannot be built-in when trying to link against a modular SOUNDWIRE_AMD driver.
Since CONFIG_SOUNDWIRE_AMD is a user-visible option, it really should never be selected by another driver in the first place, so replace the extra complexity with a normal Kconfig dependency in SND_SOC_SOF_AMD_SOUNDWIRE, plus a top-level check that forbids any of the AMD SOF drivers from being built-in with CONFIG_SOUNDWIRE_AMD=m.
In normal configs, they should all either be built-in or all loadable modules anyway, so this simplification does not limit any real usecases.
Fixes: d948218424bf ("ASoC: SOF: amd: add code for invoking soundwire manager helper functions") Signed-off-by: Arnd Bergmann arnd@arndb.de --- sound/soc/sof/amd/Kconfig | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/sound/soc/sof/amd/Kconfig b/sound/soc/sof/amd/Kconfig index c3bbe6c70fb2..2729c6eb3feb 100644 --- a/sound/soc/sof/amd/Kconfig +++ b/sound/soc/sof/amd/Kconfig @@ -6,6 +6,7 @@
config SND_SOC_SOF_AMD_TOPLEVEL tristate "SOF support for AMD audio DSPs" + depends on SOUNDWIRE_AMD || !SOUNDWIRE_AMD depends on X86 || COMPILE_TEST help This adds support for Sound Open Firmware for AMD platforms. @@ -62,15 +63,14 @@ config SND_SOC_SOF_ACP_PROBES
config SND_SOC_SOF_AMD_SOUNDWIRE_LINK_BASELINE tristate - select SOUNDWIRE_AMD if SND_SOC_SOF_AMD_SOUNDWIRE != n select SND_AMD_SOUNDWIRE_ACPI if ACPI
config SND_SOC_SOF_AMD_SOUNDWIRE tristate "SOF support for SoundWire based AMD platforms" default SND_SOC_SOF_AMD_SOUNDWIRE_LINK_BASELINE depends on SND_SOC_SOF_AMD_SOUNDWIRE_LINK_BASELINE - depends on ACPI && SOUNDWIRE - depends on !(SOUNDWIRE=m && SND_SOC_SOF_AMD_SOUNDWIRE_LINK_BASELINE=y) + depends on ACPI + depends on SOUNDWIRE_AMD help This adds support for SoundWire with Sound Open Firmware for AMD platforms.