Re: Bug Report: Delayed Wake from Suspend with Genesys Logic GL9755 SD Host Controller

["Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>]

On Mon, 26 Feb 2024, Mathias De Weerdt wrote:

> Hi Bjorn
> 
> This has indeed never worked. I have even tried plenty of older
> kernels and now also the latest mainline.
> 
> I collected the data you requested on the following kernel (Latest
> mainline as of yesterday)
> Linux core-arch 6.8.0-rc5-1-mainline #1 SMP PREEMPT_DYNAMIC Sun, 25
> Feb 2024 21:59:28 +0000 x86_64 GNU/Linux
> 
> After booting the laptop I put it to sleep and woke it up and
> collected the dmesg and lspci logs. (They have been attached)
> 
> Thanks for your quick response.
> If you need anything else please let me know.
> 
> Kinds regards
> Mathias
> 
> On Mon, 26 Feb 2024 at 00:31, Bjorn Helgaas <helgaas@kernel.org> wrote:
> >
> > On Sun, Feb 25, 2024 at 11:38:35PM +0100, Mathias De Weerdt wrote:
> > > Hi
> > >
> > > I am writing to report a potential bug in the Linux kernel related to
> > > waking from suspend on a system(Laptop) with a Genesys Logic GL9755 SD
> > > Host Controller. Below are the details of the issue:
> >
> > Hi Mathias, thanks very much for this report.  A few questions below.
> >
> > > Issue Description:
> > > After suspending the system, waking it up takes an extended amount of
> > > time, typically 1 to 2 minutes. The delay occurs consistently and is
> > > observed in the dmesg logs.
> > >
> > >
> > > System Information:
> > > - OS: Arch Linux x86_64
> > > - Kernel: 6.7.5-arch1-1 and 6.7.6-arch1-1
> > > - SD Host Controller: Genesys Logic GL9755 SD Host Controller (PCI ID:
> > > 17a0:9755)
> > >
> > > Observed Logs (dmesg):
> > > [ 642.483972] sdhci-pci 0000:2f:00.0: not ready 1023ms after resume; waiting
> > > [ 643.537370] sdhci-pci 0000:2f:00.0: not ready 2047ms after resume; waiting
> > > [ 645.724028] sdhci-pci 0000:2f:00.0: not ready 4095ms after resume; waiting
> > > [ 649.990655] sdhci-pci 0000:2f:00.0: not ready 8191ms after resume; waiting
> > > [ 658.310658] sdhci-pci 0000:2f:00.0: not ready 16383ms after resume; waiting
> > > [ 675.590673] sdhci-pci 0000:2f:00.0: not ready 32767ms after resume; waiting
> > > [ 709.723965] sdhci-pci 0000:2f:00.0: not ready 65535ms after resume; giving up
> > > [ 709.724183] sdhci-pci 0000:2f:00.0: Unable to change power state
> > > from D3cold to D0, device inaccessible

Hi Mathias,

In your dmesg, there's the Target Speed quirk triggering. Please try these 
two patches, they should fix the logic bug that causes the long delay you 
see:

https://lore.kernel.org/linux-pci/alpine.DEB.2.21.2402092125070.2376@angie.orcam.me.uk/T/#t

(They won't help to the link not coming up issue though).

-- 
 i.