linux-kernel - [PATCH 0/2] PCI: dwc: Suspend/resume rework

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Message-Id: <20251119-pci-dwc-suspend-rework-v1-0-aad104828562@oss.qualcomm.com>
Date: Wed, 19 Nov 2025 23:40:06 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>
To: Jingoo Han <jingoohan1@...il.com>, Manivannan Sadhasivam <mani@...nel.org>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kwilczynski@...nel.org>,
        Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        vincent.guittot@...aro.org, zhangsenchuan@...incomputing.com,
        Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>
Subject: [PATCH 0/2] PCI: dwc: Suspend/resume rework

Hi,

This series is a rework of [1] to allow DWC vendor glue drivers to use the
dw_pcie_suspend_noirq() and dw_pcie_resume_noirq() APIs without failures as
reported in [2][3].

Currently, both of these APIs will fail if there is no device connected to the
bus. This is not fair as suspend/resume should continue even if there is no
device. Hence, this series tries to address this limitation.

- Mani

[1] https://lore.kernel.org/linux-pci/20251107044319.8356-4-manivannan.sadhasivam@oss.qualcomm.com/
[2] https://lore.kernel.org/linux-pci/CAKfTPtCtHquxtK=Zx2WSNm15MmqeUXO8XXi8FkS4EpuP80PP7g@mail.gmail.com/
[3] https://lore.kernel.org/linux-pci/27516921.17f2.1997bb2a498.Coremail.zhangsenchuan@eswincomputing.com/

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>
---
Manivannan Sadhasivam (2):
      PCI: dwc: Skip PME_Turn_Off broadcast and L2/L3 transition during suspend if link is not up
      PCI: dwc: Do not return failure from dw_pcie_wait_for_link() if link is in Detect/Poll state

 drivers/pci/controller/dwc/pcie-designware-host.c | 12 +++++++++---
 drivers/pci/controller/dwc/pcie-designware.c      |  8 ++++++++
 2 files changed, 17 insertions(+), 3 deletions(-)
---
base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787
change-id: 20251119-pci-dwc-suspend-rework-8b0515a38679

Best regards,
-- 
Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>