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Date: Wed, 8 May 2024 10:49:50 -0500
From: Bjorn Helgaas <helgaas@kernel.org>
To: Bagas Sanjaya <bagasdotme@gmail.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Regressions <regressions@lists.linux.dev>,
	Linux NVMe <linux-nvme@lists.infradead.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Chaitanya Kulkarni <kch@nvidia.com>, Christoph Hellwig <hch@lst.de>,
	gloriouseggroll@gmail.com
Subject: Re: Fwd: Regression: Kernel 6.4 rc1 and higher causes Steam Deck to
 fail to wake from suspend (bisected)
Message-ID: <20240508154950.GA1768252@bhelgaas>
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In-Reply-To: <0e784280-02bb-4e0e-a5ae-4e0a40ea4c51@gmail.com>

On Tue, Oct 31, 2023 at 03:21:20PM +0700, Bagas Sanjaya wrote:
> 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

I don't think regzbot picked this up, so trying again since this is
still open:

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

> [1]: https://bugzilla.kernel.org/show_bug.cgi?id=218090
> 
> -- 
> An old man doll... just what I always wanted! - Clara