Re: [PATCH v4 4/5] PCI: host-common: Add link down handling for host bridges

From: Niklas Cassel <cassel@kernel.org>
To: Manivannan Sadhasivam <mani@kernel.org>
Cc: "Bjorn Helgaas" <helgaas@kernel.org>,
	"Mahesh J Salgaonkar" <mahesh@linux.ibm.com>,
	"Oliver O'Halloran" <oohall@gmail.com>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Rob Herring" <robh@kernel.org>,
	"Zhou Wang" <wangzhou1@hisilicon.com>,
	"Will Deacon" <will@kernel.org>,
	"Robert Richter" <rric@kernel.org>,
	"Alyssa Rosenzweig" <alyssa@rosenzweig.io>,
	"Marc Zyngier" <maz@kernel.org>,
	"Conor Dooley" <conor.dooley@microchip.com>,
	"Daire McNamara" <daire.mcnamara@microchip.com>,
	dingwei@marvell.com, "Lukas Wunner" <lukas@wunner.de>,
	"Krishna Chaitanya Chundru" <krishna.chundru@oss.qualcomm.com>,
	linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-riscv@lists.infradead.org
Subject: Re: [PATCH v4 4/5] PCI: host-common: Add link down handling for host bridges
Date: Mon, 7 Jul 2025 13:29:22 +0200	[thread overview]
Message-ID: <aGuvkkeVkezGJWXn@ryzen> (raw)
In-Reply-To: <aGuqA92VDLK8eRY1@ryzen>

+ Mani's kernel.org email.

On Mon, Jul 07, 2025 at 01:05:39PM +0200, Niklas Cassel wrote:
> Hello Mani,
> 
> On Fri, May 30, 2025 at 09:39:28PM +0530, Manivannan Sadhasivam wrote:
> > On Fri, May 30, 2025 at 06:34:04AM -0500, Bjorn Helgaas wrote:
> > 
> > > I think pci_host_handle_link_down() should take a Root Port, not a
> > > host bridge, and the controller driver should figure out which port
> > > needs to be recovered, or the controller driver can have its own loop
> > > to recover all of them if it can't figure out which one needs it.
> > > 
> > 
> > This should also work. Feel free to drop the relevant commits for v6.16, I can
> > resubmit them (including dw-rockchip after -rc1).
> 
> What is the current status of this?
> 
> I assume that there is not much time left before 6.17 cut-off.
> 
> 
> Kind regards,
> Niklas