linux-kernel - Re: [PATCH] thunderbolt: Fix PCIe device enumeration with delayed rescan

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Message-ID: <20260203100752.GF2275908@black.igk.intel.com>
Date: Tue, 3 Feb 2026 11:07:52 +0100
From: Mika Westerberg <mika.westerberg@...ux.intel.com>
To: Jayi Li <lijiayi@...inos.cn>
Cc: "Chia-Lin Kao (AceLan)" <acelan.kao@...onical.com>,
	Andreas Noever <andreas.noever@...il.com>,
	Mika Westerberg <westeri@...nel.org>,
	Yehezkel Bernat <YehezkelShB@...il.com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, Gil Fine <gil.fine@...ux.intel.com>
Subject: Re: [PATCH] thunderbolt: Fix PCIe device enumeration with delayed
 rescan

On Tue, Feb 03, 2026 at 06:00:06PM +0800, Jayi Li wrote:
> > > I'm not sure if this is relevant to this issue, but sharing just in case.
> > Thanks for sharing!
> > 
> > It could be. What device this is?
> The device is Targus DOCK221.

Is the host Intel or AMD (well can you share bit more details about the
topology)? Then if you block runtime PM of the PCIe Downstream Port that
leads to the TB3 device like:

 # echo on > /sys/bus/pci/devices/DEVICE/power/control

Does it work?