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Date:   Thu, 8 Dec 2022 16:12:26 +0200
From:   Mika Westerberg <mika.westerberg@linux.intel.com>
To:     Bjorn Helgaas <helgaas@kernel.org>
Cc:     Bjorn Helgaas <bhelgaas@google.com>,
        Sathyanarayanan Kuppuswamy 
        <sathyanarayanan.kuppuswamy@linux.intel.com>,
        linux-pci@vger.kernel.org
Subject: Re: [PATCH v2] PCI/portdrv: Do not require an interrupt for all AER
 capable ports
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On Thu, Dec 08, 2022 at 03:58:19PM +0200, Mika Westerberg wrote:
> If there is no driver attached to PCI device (this case upstream port)
> it will not enter low power states. It allows GPU to suspend but it
> does not allow the whole topology to enter low power states.

Ah, also in our case they saw the portdv probe fail in the logs.