linux-kernel - [PATCH v2 0/2] PCI: dwc: Suspend/resume rework

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20251218-pci-dwc-suspend-rework-v2-0-5a7778c6094a@oss.qualcomm.com>
Date: Thu, 18 Dec 2025 17:34:51 +0530
From: Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.oss.qualcomm.com@...nel.org>
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>, 
 Frank Li <Frank.Li@....com>, Shawn Lin <shawn.lin@...k-chips.com>
Subject: [PATCH v2 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>
---
Changes in v2:
- Changed the logic to check for Detect.Quiet/Active states
- Collected tags and rebased on top of v6.19-rc1
- Link to v1: https://lore.kernel.org/r/20251119-pci-dwc-suspend-rework-v1-0-aad104828562@oss.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 if link is in Detect.Quiet/Active states

 drivers/pci/controller/dwc/pcie-designware-host.c | 12 +++++++++---
 drivers/pci/controller/dwc/pcie-designware.c      | 12 +++++++++++-
 2 files changed, 20 insertions(+), 4 deletions(-)
---
base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
change-id: 20251119-pci-dwc-suspend-rework-8b0515a38679

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