linux-kernel - Re: [PATCH v7 08/17] ACPI: pci_link: Clear the dependencies after probe

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Message-ID: <aS2ZFdMFMwdlLHA2@sunil-laptop>
Date: Mon, 1 Dec 2025 19:03:09 +0530
From: Sunil V L <sunilvl@...tanamicro.com>
To: huyuye <huyuye812@....com>
Cc: ajones@...tanamicro.com, anup@...infault.org, aou@...s.berkeley.edu,
	atishp@...osinc.com, bhelgaas@...gle.com, catalin.marinas@....com,
	conor.dooley@...rochip.com, dfustini@...storrent.com,
	haibo1.xu@...el.com, lenb@...nel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-riscv@...ts.infradead.org,
	palmer@...belt.com, rafael@...nel.org, robert.moore@...el.com,
	samuel.holland@...ive.com, tglx@...utronix.de, will@...nel.org,
	dai.hualiang@....com.cn, deng.weixian@....com.cn,
	guo.chang2@....com.cn, liu.qingtao2@....com.cn,
	wu.jiabao@....com.cn, lin.yongchun@....com.cn, hu.yuye@....com.cn,
	zhang.longxiang@....com.cn
Subject: Re: [PATCH v7 08/17] ACPI: pci_link: Clear the dependencies after
 probe

On Mon, Dec 01, 2025 at 09:07:55PM +0800, huyuye wrote:
> Hi, sunilvl
> 
> 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?
> 
> 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.
> 
Yes, that should work.

Regards,
Sunil