On Mon, Dec 01, 2025 at 10:12:29PM +0800, huyuye wrote:

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Hi, sunilvl

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Based on the above patch, I understand that you previously >resolved dependencies between Link devices and PCI Host Bridges by >calling acpi_dev_clear_dependencies(device). I would like to ask: >on RISC‑V platforms, if we need to manage dependencies between >multiple PCI Host Bridges, could this be addressed by adding a >call to acpi_dev_clear_dependencies(device) at the end of the >acpi_pci_root_add enumeration function?

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Initialization order dependencies can be defined via the ACPI >_DEP method in the DSDT. For example, if host bridge B depends on >host bridge A, bridge B should not be enumerated until bridge A is >fully initialized.

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Yes, that should work.
Regards,
Sunil

Hi,Sunil

I'm truly honored by your affirmation of my answer.Do you think this solution has a chance of being accepted into the upstream kernel? Are there any unintended side effects we may have overlooked?

Acceptance of this solution depends on the PCI/ACPI maintainers. To help
them evaluate it, you should clearly describe why your platform requires
this dependency in the patch.

Regards
Sunil