linux-kernel - Re: [PATCH v7-incomplete 3/3] PCI: Unify ACPI and DT 'preserve config' support

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Message-ID: <ZiYVDEt-c57rAIl7@surfacebook.localdomain>
Date: Mon, 22 Apr 2024 10:43:08 +0300
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Bjorn Helgaas <helgaas@...nel.org>
Cc: Vidya Sagar <vidyas@...dia.com>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>, Will Deacon <will@...nel.org>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>,
	Frank Rowand <frowand.list@...il.com>,
	Thierry Reding <treding@...dia.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Krishna Thota <kthota@...dia.com>,
	Manikanta Maddireddy <mmaddireddy@...dia.com>,
	Vidya Sagar <sagar.tv@...il.com>, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH v7-incomplete 3/3] PCI: Unify ACPI and DT 'preserve
 config' support

Sun, Apr 21, 2024 at 02:09:14PM -0500, Bjorn Helgaas kirjoitti:

..

> +	if (host_bridge->dev.parent && host_bridge->dev.parent->of_node)
> +		return of_pci_preserve_config(host_bridge->dev.parent->of_node);

If you need fwnode or of_node from struct device, please avoid direct
dereference, we have

dev_fwnode()
of_fwnode_handle()
dev_of_node()

-- 
With Best Regards,
Andy Shevchenko