linux-kernel - Re: [PATCH v9 0/2] pwrseq: introduce the subsystem and first driver

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Date: Fri, 21 Jun 2024 15:23:37 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Lk Sii <lk_sii@....com>, marcel@...tmann.org, luiz.dentz@...il.com
Cc: patchwork-bot+bluetooth@...nel.org, davem@...emloft.net, 
	edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, robh@...nel.org, 
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org, kvalo@...nel.org, 
	andersson@...nel.org, konrad.dybcio@...aro.org, lgirdwood@...il.com, 
	broonie@...nel.org, catalin.marinas@....com, will@...nel.org, 
	bhelgaas@...gle.com, saravanak@...gle.com, geert+renesas@...der.be, 
	arnd@...db.de, neil.armstrong@...aro.org, m.szyprowski@...sung.com, 
	elder@...aro.org, srinivas.kandagatla@...aro.org, gregkh@...uxfoundation.org, 
	abel.vesa@...aro.org, mani@...nel.org, lukas@...ner.de, 
	dmitry.baryshkov@...aro.org, amit.pundir@...aro.org, wuxilin123@...il.com, 
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	linux-arm-kernel@...ts.infradead.org, linux-pci@...r.kernel.org, 
	linux-pm@...r.kernel.org, bartosz.golaszewski@...aro.org
Subject: Re: [PATCH v9 0/2] pwrseq: introduce the subsystem and first driver

On Fri, Jun 21, 2024 at 11:04 AM Lk Sii <lk_sii@....com> wrote:
>
> On 2024/6/21 14:36, Bartosz Golaszewski wrote:
> > On Fri, Jun 21, 2024 at 3:14 AM Lk Sii <lk_sii@....com> wrote:
> >>
> >>
> >>
> >> On 2024/6/20 22:30, patchwork-bot+bluetooth@...nel.org wrote:
> >>> Hello:
> >>>
> >>> This series was applied to bluetooth/bluetooth-next.git (master)
> >>> by Bartosz Golaszewski <bartosz.golaszewski@...aro.org>:
> >>>
> >> Hi luiz,
> >>
> >> i am curious why Bartosz is able to merge his changes into bluetooth
> >> development tree bluetooth-next directly.
> >>
> >
> > This conversation is getting progressively worse...
> >
> >> 1)
> >> his changes should belong to *POWER* scope instead of *Bluetooth*
> >> obviously, however, there are *NOT* any SOB tag from either power and
> >> bluetooth maintainer. these changes currently only have below Acked-by
> >> and Signed-off-by tags:
> >>
> >> Acked-by: Krzysztof Kozlowski <krzk@...nel.org>
> >> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> >>
> >
> > It's a new subsystem that has been discussed and reviewed for months
> > and thoroughly tested. Please refer to the cover letter under v8
> > linked in this thread. It's not related to power-management or
> > power-supply, it's its own thing but IMO the best place to put it is
> > under drivers/power/. And I will maintain it.
> >
> >> 2)
> >> his changes have not merged into linus mainline tree yet.
> >>
> >
> > This is why they are in next! They are scheduled to go in during the
> > upcoming merge window. But since changes belong in multiple trees, we
> > need a cross-tree merge.
> >
> >> 3)
> >> perhaps, it is safer to pull his changes from linus mainline tree when
> >> merged than to merge into bluetooth-next firstly.
> >>
> >
> > It's not safer at all, why would spending less time in next be safer?
> >
> it seems this patch serial(new subsystem) does not depend on bluetooth
> and also does not belong to bluetooth subsystem, but have been contained
> by tip of bluetooth tree.
>

It's the other way around: bluetooth changes (namely the hci_qca
driver) depend on the power sequencing changes.

> why not follow below merging produce?
> 1) you send this patch serials to Linus to merge within linus mainline tree
> 2) luiz then pull your changes from linus mainline tree.
>

I explained this in my previous email. Why would you want these
changes to needlessly wait for another release cycle? It makes no
sense. It's just a regular cross-tree merge like hundreds that are
performed every release.

> >>> On Wed,  5 Jun 2024 14:38:48 +0200 you wrote:
> >>>> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> >>>>
> >>>> Hi!
> >>>>
> >>>> These are the power sequencing patches sent separately after some
> >>>> improvements suggested by Bjorn Helgaas. I intend to pick them up into a
> >>>> new branch and maintain the subsystem from now on. I then plan to
> >>>> provide an immutable tag to the Bluetooth and PCI subsystems so that the
> >>>> rest of the C changes can be applied. This new branch will then be
> >>>> directly sent to Linus Torvalds for the next merge window.
> >>>>
> >>>> [...]
> >>>
> >>> Here is the summary with links:
> >>>   - [v9,1/2] power: sequencing: implement the pwrseq core
> >>>     https://git.kernel.org/bluetooth/bluetooth-next/c/249ebf3f65f8
> >>>   - [v9,2/2] power: pwrseq: add a driver for the PMU module on the QCom WCN chipsets
> >>>     https://git.kernel.org/bluetooth/bluetooth-next/c/2f1630f437df
> >>>
> >>> You are awesome, thank you!
> >>
> >
> > Why are you top-posting anyway?
> >
> it is caused by my bad mail client settings. thanks for reminder.
> > Bart
>

Luiz, Marcel: Am I wasting my time with this person? Is this another
Markus Elfring and I unknowingly got pulled into a nonsensical
argument?

Bart