linux-kernel - Re: [PATCH v9 4/4] PCI: dwc: Support ECAM mechanism by enabling iATU 'CFG Shift Feature'

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Message-ID: <alpine.DEB.2.21.2511281714030.36486@angie.orcam.me.uk>
Date: Fri, 28 Nov 2025 17:16:47 +0000 (GMT)
From: "Maciej W. Rozycki" <macro@...am.me.uk>
To: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
cc: Manivannan Sadhasivam <mani@...nel.org>, Jingoo Han <jingoohan1@...il.com>, 
    Lorenzo Pieralisi <lpieralisi@...nel.org>, 
    Krzysztof Wilczyński <kwilczynski@...nel.org>, 
    Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, 
    Krzysztof Kozlowski <krzk@...nel.org>, 
    Alim Akhtar <alim.akhtar@...sung.com>, 
    Jonathan Chocron <jonnyc@...zon.com>, linux-pci@...r.kernel.org, 
    linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, 
    linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v9 4/4] PCI: dwc: Support ECAM mechanism by enabling iATU
 'CFG Shift Feature'

On Fri, 28 Nov 2025, Krishna Chaitanya Chundru wrote:

> >   I have no slightest idea why it should cause a regression such as this,
> > it seems totally unrelated.  Yet it's 100% reproducible.  Could this be
> > because it's the only device in the system that actually uses PCI/e port
> > I/O?
> Hi Maciej, Can you try attached patch and let me know if that is helping you
> or not. - Krishna Chaitanya.

 No change, it's still broken, sorry.

  Maciej