linux-kernel - Re: PCI ASPM regression resulting from commit 4ff116d0d5fd8

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Message-ID: <8c5ae6c4-c282-6273-34d8-2eb62a00d364@nvidia.com>
Date:   Fri, 13 Jan 2023 16:42:13 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Tasev Nikola <tasev.stefanoska@...net.be>,
        Mark Francis Enriquez <enriquezmark36@...il.com>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux PCI <linux-pci@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Thorsten Leemhuis (regressions address)" <regressions@...mhuis.info>
Subject: Re: PCI ASPM regression resulting from commit 4ff116d0d5fd8

Thanks for bringing it to my notice. I'll look into it.

Thanks,
Vidya Sagar

On 1/13/2023 12:30 AM, Rafael J. Wysocki wrote:
> External email: Use caution opening links or attachments
> 
> 
> Hi Vidya,
> 
> Your commit 4ff116d0d5fd8 ("PCI/ASPM: Save L1 PM Substates Capability
> for suspend/resume") has introduced a system resume issue described in
> the bug entry at:
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=216782
> 
> It looks like restoring the L1SS state during system resume has
> unexpected side effects.
> 
> Can you have a look at this, please?
> 
> Thanks,
> Rafael