linux-kernel - Re: [PATCH v2 0/3] PCI: dwc: Check for device presence in suspend and resume

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Message-Id: <176259745262.10508.495485306102349892.b4-ty@kernel.org>
Date: Sat, 08 Nov 2025 15:54:12 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>
To: lpieralisi@...nel.org, kwilczynski@...nel.org, bhelgaas@...gle.com,
        Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>
Cc: will@...nel.org, linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        robh@...nel.org, linux-arm-msm@...r.kernel.org,
        zhangsenchuan@...incomputing.com, vincent.guittot@...aro.org
Subject: Re: [PATCH v2 0/3] PCI: dwc: Check for device presence in suspend
 and resume


On Fri, 07 Nov 2025 10:13:16 +0530, Manivannan Sadhasivam wrote:
> This series aims to fix the usage of dw_pcie_link_up() API to check for Link up
> during system suspend. The motivation for this series comes from recent
> discussions [1] [2], where developers wanted to skip PME_Turn_Off broadcast in
> dw_pcie_suspend_noirq() API when devices are not attached to the bus. They ended
> up using dw_pcie_link_up() to check for the device presence due to the bad
> example in the pcie-qcom driver which does the same. The usage of
> dw_pcie_link_up() API here would be racy as the link can go down at any time
> after the check.
> 
> [...]

Applied, thanks!

[1/3] PCI: host-common: Add an API to check for any device under the Root Ports
      commit: 64a4b36d229120a71ede91aed16519164a181c13
[2/3] PCI: qcom: Check for the presence of a device instead of Link up during suspend
      commit: b6811cd64ac54fb2426b6ce35ba7c63588402687
[3/3] PCI: dwc: Check for the device presence during suspend and resume
      commit: e8fe6b3413a1b92b4bc0f0182ea4b49ee369541b

Best regards,
-- 
Manivannan Sadhasivam <mani@...nel.org>