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Message-ID: <8c5ae6c4-c282-6273-34d8-2eb62a00d364@nvidia.com>
Date:   Fri, 13 Jan 2023 16:42:13 +0530
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Subject: Re: PCI ASPM regression resulting from commit 4ff116d0d5fd8
Content-Language: en-US
To:     "Rafael J. Wysocki" <rafael@kernel.org>
Cc:     Bjorn Helgaas <bhelgaas@google.com>,
        Tasev Nikola <tasev.stefanoska@skynet.be>,
        Mark Francis Enriquez <enriquezmark36@gmail.com>,
        Linux PM <linux-pm@vger.kernel.org>,
        Linux PCI <linux-pci@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "Thorsten Leemhuis (regressions address)" <regressions@leemhuis.info>
References: <CAJZ5v0gKUq_A6mBC5stRo20G+Z=9v90AbAQ51c4uKm41OiCKVA@mail.gmail.com>
From:   Vidya Sagar <vidyas@nvidia.com>
In-Reply-To: <CAJZ5v0gKUq_A6mBC5stRo20G+Z=9v90AbAQ51c4uKm41OiCKVA@mail.gmail.com>
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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