Re: [PATCH 0/6] PCI: dwc: Revert Link Up IRQ support

From: Niklas Cassel <cassel@kernel.org>
To: FUKAUMI Naoki <naoki@radxa.com>
Cc: "Manivannan Sadhasivam" <mani@kernel.org>,
	"Jingoo Han" <jingoohan1@gmail.com>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Heiko Stuebner" <heiko@sntech.de>,
	"Shawn Lin" <shawn.lin@rock-chips.com>,
	"Krishna chaitanya chundru" <quic_krichai@quicinc.com>,
	linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org,
	linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH 0/6] PCI: dwc: Revert Link Up IRQ support
Date: Thu, 27 Nov 2025 08:43:41 +0100	[thread overview]
Message-ID: <aSgBLQ7rDOiEFhMB@ryzen> (raw)
In-Reply-To: <F11F0D13437B012D+0c15c5ca-f64f-49f1-9ff5-26b88d59ff59@radxa.com>

Hello FUKAUMI Naoki,

On Thu, Nov 27, 2025 at 04:34:53PM +0900, FUKAUMI Naoki wrote:
> Hi all,
> 
> I'm very sorry, but my ROCK 5C appears to be unreliable. (It worked fine
> with vanilla v6.13, so I thought it was fine.)
> 
> I replaced it with another 5C (Lite), and now every method (Niklas's patch,
> Shawn's patch, and applying patch 1 and 2) seems to work.

Could you please give us some more information.

Does the Rock 5C Lite have a PCIe switch?

Does Rock 5C Lite work fine with the current code in mainline?
(i.e. with bus enumeration when Link Up IRQ is triggered).

Kind regards,
Niklas