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Date:   Tue, 31 Oct 2023 15:21:20 +0700
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To:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Regressions <regressions@lists.linux.dev>,
        Linux NVMe <linux-nvme@lists.infradead.org>
Cc:     Bjorn Helgaas <bhelgaas@google.com>,
        Chaitanya Kulkarni <kch@nvidia.com>,
        Christoph Hellwig <hch@lst.de>, gloriouseggroll@gmail.com
From:   Bagas Sanjaya <bagasdotme@gmail.com>
Subject: Fwd: Regression: Kernel 6.4 rc1 and higher causes Steam Deck to fail
 to wake from suspend (bisected)
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Hi,

I notice a regression report on Bugzilla [1]. Quoting from it:

> On Kernel 6.4 rc1 and higher if you put the Steam Deck into suspend then press the power button again it will not wake up. 
> 
> I don't have a clue as to -why- this commit breaks wake from suspend on steam deck, but it does. Bisected to:
> 
> ```
> 1ad11eafc63ac16e667853bee4273879226d2d1b is the first bad commit
> commit 1ad11eafc63ac16e667853bee4273879226d2d1b
> Author: Bjorn Helgaas <bhelgaas@google.com>
> Date:   Tue Mar 7 14:32:43 2023 -0600
> 
>     nvme-pci: drop redundant pci_enable_pcie_error_reporting()
>     
>     pci_enable_pcie_error_reporting() enables the device to send ERR_*
>     Messages.  Since f26e58bf6f54 ("PCI/AER: Enable error reporting when AER is
>     native"), the PCI core does this for all devices during enumeration, so the
>     driver doesn't need to do it itself.
>     
>     Remove the redundant pci_enable_pcie_error_reporting() call from the
>     driver.  Also remove the corresponding pci_disable_pcie_error_reporting()
>     from the driver .remove() path.
>     
>     Note that this only controls ERR_* Messages from the device.  An ERR_*
>     Message may cause the Root Port to generate an interrupt, depending on the
>     AER Root Error Command register managed by the AER service driver.
>     
>     Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
>     Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
>     Signed-off-by: Christoph Hellwig <hch@lst.de>
> 
>  drivers/nvme/host/pci.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
> ```
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.4.y&id=1ad11eafc63ac16e667853bee4273879226d2d1b
> 
> Reverting that commit by itself on top of 6.5.9 (stable) allows it to wake from suspend properly.

See Bugzilla for the full thread.

Anyway, I'm adding this regression to regzbot:

#regression introduced: 1ad11eafc63ac1 https://bugzilla.kernel.org/show_bug.cgi?id=218090
#regression title: Steam Deck fails to wake from suspend due to pci_enable_pcie_error_reporting() removal

Thanks.

[1]: https://bugzilla.kernel.org/show_bug.cgi?id=218090

-- 
An old man doll... just what I always wanted! - Clara