linux-kernel - Re: [PATCH] PCI: stm32: Fix LTSSM EP race with start link.

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Message-Id: <176339224773.8361.12189431111845230002.b4-ty@kernel.org>
Date: Mon, 17 Nov 2025 20:40:47 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>
To: Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kwilczynski@...nel.org>,
        Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Christian Bruel <christian.bruel@...s.st.com>
Cc: linux-pci@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: stm32: Fix LTSSM EP race with start link.


On Fri, 14 Nov 2025 08:45:52 +0100, Christian Bruel wrote:
> If the host has deasserted PERST# and started link training before the link
> is started on EP side, enabling LTSSM before the endpoint registers are
> initialized in the perst_irq handler results in probing incorrect values.
> 
> Thus, wait for the PERST# level-triggered interrupt to start link training
> at the end of initialization and cleanup the stm32_pcie_[start stop]_link
> functions.
> 
> [...]

Applied, thanks!

[1/1] PCI: stm32: Fix LTSSM EP race with start link.
      commit: acca17da9c9f53c0aa05bbdef255213d36dc09db

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