I noticed this after trying to understand why my minimal Nova defconfig was not selecting NOVA_CORE anymore and why I couldn't even find it in menuconfig.
CONFIG_AUXILIARY_BUS cannot be enabled directly and must be selected by another module. Options that depend on it thus cannot be enabled unless a different module selecting AUXILIARY_BUS is also enabled. All non-Rust modules using CONFIG_AUXILIARY_BUS select it, so it should make sense for the Rust ones to use that scheme as well. Btw Danilo, since the fixed patches are not in mainline yet, please feel free to just squash these fixes into the original patches if you think it makes more sense. Signed-off-by: Alexandre Courbot <acour...@nvidia.com> --- Changes in v2: - Added missing Fixes: tags. - Collected Reviewed-by: tag. - Link to v1: https://lore.kernel.org/r/20250515-aux_bus-v1-0-1781b5442...@nvidia.com --- Alexandre Courbot (3): samples: rust: select AUXILIARY_BUS instead of depending on it gpu: nova-core: select AUXILIARY_BUS instead of depending on it gpu: drm: nova: select AUXILIARY_BUS instead of depending on it drivers/gpu/drm/nova/Kconfig | 2 +- drivers/gpu/nova-core/Kconfig | 2 +- samples/rust/Kconfig | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) --- base-commit: 61479ae38cb7bf6083de302598b7d491ec54168a change-id: 20250515-aux_bus-c9da900b7c3f Best regards, -- Alexandre Courbot <acour...@nvidia.com>