linux-kernel - Re: [PATCH 9/9] dt-bindings: PCI: qcom,pcie-x1e80100: Add missing required power-domains

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Message-ID: <aQTB4dt-Oi1JCGFf@hovoldconsulting.com>
Date: Fri, 31 Oct 2025 15:04:17 +0100
From: Johan Hovold <johan@...nel.org>
To: Rob Herring <robh@...nel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Abel Vesa <abel.vesa@...aro.org>, linux-arm-msm@...r.kernel.org,
	linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 9/9] dt-bindings: PCI: qcom,pcie-x1e80100: Add missing
 required power-domains

On Thu, Oct 30, 2025 at 01:08:27PM -0500, Rob Herring wrote:
> On Wed, Oct 29, 2025 at 05:46:30PM +0100, Johan Hovold wrote:
> > On Wed, Oct 29, 2025 at 04:40:46PM +0100, Krzysztof Kozlowski wrote:
> > > Power domains should be required for PCI, so the proper SoC supplies are
> > > turned on.
> > > 
> > > Cc: <stable@...r.kernel.org>
> > 
> > I have a feeling I've pointed this out before, but these kind of binding
> > patches really does not seem to qualify for stable backporting (e.g.
> > does not "fix a real bug that bothers people").
> 
> Presumably if someone omits power-domain and the driver doesn't work, 
> then it's a bug affecting them.

Yeah, and any such devicetree source fix would be a candidate for stable
backporting.
 
> I'm fine with dropping the stable tag because it will still most likely 
> get picked up with the Fixes tag. :)

Heh. I skimmed the 6.16 stable branch and it seems it was mostly
explicitly tagged binding patches that ended up being backported.

Johan