linux-kernel - Re: [PATCH v5 3/4] PCI: Decouple D3Hot and D3Cold handling for bridges

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Message-ID: <Zz-B5DSJx6z_FEQ4@google.com>
Date: Thu, 21 Nov 2024 10:54:28 -0800
From: Brian Norris <briannorris@...omium.org>
To: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc: Bjorn Helgaas <helgaas@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	lukas@...ner.de, mika.westerberg@...ux.intel.com,
	Hsin-Yi Wang <hsinyi@...omium.org>
Subject: Re: [PATCH v5 3/4] PCI: Decouple D3Hot and D3Cold handling for
 bridges

Hi Manivannan,

On Thu, Aug 29, 2024 at 10:52:44AM +0530, Manivannan Sadhasivam wrote:
> On Wed, Aug 28, 2024 at 04:07:05PM -0500, Bjorn Helgaas wrote:
> > On Wed, Aug 28, 2024 at 09:22:17PM +0530, Manivannan Sadhasivam wrote:
> > > I can, but I do not want these cleanups/refactoring to delay merging
> > > the patch 4. Are you OK if I just send it standalone and work on the
> > > refactoring as a separate series?
> > 
> > You mean to send patch 4/4 standalone, and do the rest separately?
> > That sounds reasonable to me.
> 
> Ack, thanks.

Did this ever happen? I ask, because I'm also interested in supporting
D3hot for bridges on device tree systems, and it seems like there's
pretty clear agreement that pci_bridge_d3_possible() should not prevent
it.

If there isn't an updated posting and plan to merge yet, would you mind
if I submitted one myself, carrying links to your work for
back-reference?

Also, I had some questions on patch 4, as I think it places too much
restriction on how the DT should look. So I might tweak it a bit if I
send a new revision.

Brian