linux-kernel - Re: [PATCH] PCI: Fix endianness issues in pci_bus_read

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Message-ID: <20250804143313.GA3624395@bhelgaas>
Date: Mon, 4 Aug 2025 09:33:13 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
To: Hans Zhang <18255117159@....com>
Cc: Gerd Bayer <gbayer@...ux.ibm.com>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Hans Zhang <hans.zhang@...tech.com>,
	Arnd Bergmann <arnd@...nel.org>, bhelgaas@...gle.com,
	Alexander Gordeev <agordeev@...ux.ibm.com>,
	Christian Borntraeger <borntraeger@...ux.ibm.com>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	jingoohan1@...il.com,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
	linux-next <linux-next@...r.kernel.org>, linux-pci@...r.kernel.org,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Niklas Schnelle <schnelle@...ux.ibm.com>, geert@...ux-m68k.org
Subject: Re: [PATCH] PCI: Fix endianness issues in pci_bus_read_config()

On Mon, Aug 04, 2025 at 11:06:36AM +0800, Hans Zhang wrote:
> ...

> According to the issue mentioned by Lukas and Mani. Gerd has already been
> tested on the s390. I have tested it on the RK3588 and it works fine. RK3588
> uses Synopsys' PCIe IP, that is, the DWC driver. Our company's is based on
> Cadence's PCIe 4.0 IP, and the test function is normal. All the platforms I
> tested were based on ARM.
> 
> The following is the patch based on the capability-search branch. May I ask
> everyone, do you have any more questions?
> 
> Gerd, if there's no problem, I'll add your Tested-by label.
> 
> Branch: ttps://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git/log/?h=capability-search

Since this series will now target v6.18, I'll watch for a complete v15
series based on v6.17-rc1, with this fix and any typo or other fixes
from pci/capability-search fully integrated.

Then that series can be tested and completely replace the current
pci/capability-search branch.

Bjorn