linux-kernel - [PATCH 0/2] PCI: {qcom-ep/tegra194}: Move endpoint cleanups to PERST# deassert handler

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Message-Id: <20240817-pci-qcom-ep-cleanup-v1-0-d6b958226559@linaro.org>
Date: Sat, 17 Aug 2024 11:09:02 +0530
From: Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.linaro.org@...nel.org>
To: Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Krzysztof Wilczyński <kw@...ux.com>, 
 Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Jonathan Hunter <jonathanh@...dia.com>, Vidya Sagar <vidyas@...dia.com>
Cc: linux-pci@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Thierry Reding <treding@...dia.com>, 
 linux-tegra@...r.kernel.org, 
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH 0/2] PCI: {qcom-ep/tegra194}: Move endpoint cleanups to
 PERST# deassert handler

Hi,

This series moves the call to endpoint cleanup functions (dw_pcie_ep_cleanup()
pci_epc_deinit_notify()) to PERST# deassert handler in qcom-ep and tegra194
drivers. It aims to fix a crash that is seen with Qcom endpoint SoCs when host
asserts PERST# and the cleanup functions are called without refclk.

During the review of v1 [1], Bjorn suggested fixing up tegra194 driver as well
as both drivers share the same design and require refclk from host for
operation.

Testing
=======

The Qcom patch is tested on SM8450 development board. For tegra194, I'm
expecting someone in the Cc list or the community will do the testing.

[1] https://lore.kernel.org/linux-pci/20240815224717.GA53536@bhelgaas/

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
Manivannan Sadhasivam (2):
      PCI: qcom-ep: Move controller cleanups to qcom_pcie_perst_deassert()
      PCI: tegra194: Move controller cleanups to pex_ep_event_pex_rst_deassert()

 drivers/pci/controller/dwc/pcie-qcom-ep.c  | 6 ++++--
 drivers/pci/controller/dwc/pcie-tegra194.c | 7 ++++---
 2 files changed, 8 insertions(+), 5 deletions(-)
---
base-commit: 8400291e289ee6b2bf9779ff1c83a291501f017b
change-id: 20240817-pci-qcom-ep-cleanup-740745e21d87

Best regards,
-- 
Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>