On Mon, Jun 16, 2025 at 02:26:57PM -0500, Mario Limonciello wrote:
> When a USB4 dock is unplugged the PCIe bridge it's connected to will
> remove issue a "Link Down" and "Card not detected event". The PCI core
> will treat this as a surprise hotplug event and unconfigure all downstream
> devices.
>
> When PCI core gets to the point that the device is removed using
> pci_device_remove() the runtime count has already been decremented and
> so calling pm_runtime_put_sync() will cause an underflow.
Unfortunately this v2 does not address the review comment I provided
earlier:
"Where has it been decremented? I think this needs to be identified
and a Fixes tag added."
https://lore.kernel.org/r/aEb60TkaaLZ3kKIT@xxxxxxxxx/
Thanks,
Lukas
