netdev - Re: [PATCH v5 14/18] PCI/pwrctl: add a power control driver for WCN7850

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Message-ID: <52fba837-989b-4213-8af7-f02cd8cb48c8@sirena.org.uk>
Date: Thu, 22 Feb 2024 12:21:36 +0000
From: Mark Brown <broonie@...nel.org>
To: Bartosz Golaszewski <brgl@...ev.pl>
Cc: Konrad Dybcio <konrad.dybcio@...aro.org>,
	Marcel Holtmann <marcel@...tmann.org>,
	Luiz Augusto von Dentz <luiz.dentz@...il.com>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>, Kalle Valo <kvalo@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Saravana Kannan <saravanak@...gle.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Arnd Bergmann <arnd@...db.de>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Alex Elder <elder@...aro.org>,
	Srini Kandagatla <srinivas.kandagatla@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Abel Vesa <abel.vesa@...aro.org>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Lukas Wunner <lukas@...ner.de>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-wireless@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-pci@...r.kernel.org,
	linux-pm@...r.kernel.org,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v5 14/18] PCI/pwrctl: add a power control driver for
 WCN7850

On Thu, Feb 22, 2024 at 10:22:50AM +0100, Bartosz Golaszewski wrote:
> On Wed, Feb 21, 2024 at 12:44 AM Mark Brown <broonie@...nel.org> wrote:

> > Yes, that's the theory - I just question if it actually does something
> > useful in practice.  Between regulators getting more and more able to
> > figure out mode switching autonomously based on load monitoring and them
> > getting more efficient it's become very unclear if this actually
> > accomplishes anything, the only usage is the Qualcomm stuff and that's
> > all really unsophisticated and has an air of something that's being
> > cut'n'pasted forwards rather than delivering practical results.  There
> > is some value at ultra low loads, but that's more for suspend modes than
> > for actual use.

> Removing it would be out of scope for this series and I don't really
> want to introduce any undefined behavior when doing a big development
> like that. I'll think about it separately.

This is new code?

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