lkml.org 
[lkml]   [2022]   [Apr]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH V1] PCI/ASPM: Save/restore L1SS Capability for suspend/resume
On Thu, Apr 21, 2022 at 01:40:02PM -0700, Kenneth R. Crudup wrote:
> On Thu, 21 Apr 2022, Kai-Heng Feng wrote:
>
> > I went through the whole discussion again, maybe Kenneth's case is
> > also the result of pcie_aspm_pm_state_change()?
>
> > Since Kenneth is using TLP to switch ASPM between performance and
> > powersaving/powersupersaving, that means 'aspm_disabled' is false.
> > Hence the KOXIA NVMe stops working post suspend and Realtek card
> > reader toggles L1ss post hibernation.
>
> > Kenneth, can you please see if removing pcie_aspm_pm_state_change()
> > from pci_raw_set_power_state() helps?
> > Anyway, this can be easier to spot if dmesg was attached.
>
> Well, I haven't had an issue with resume/return from hibernate for quite some
> time, and the patch I'd reported a long time ago is now in the Linus' master
> I've been running. I believe a BIOS change from Dell fixed it up for me.

Which patch are you referring to?

Vidya's original patch [1] is not upstream, at least AFAIK. Well, it
*was* merged as 4257f7e008ea [2] in v5.11-rc1, but then reverted by
40fb68c7725a [3] in v5.11-rc7.

[1] https://lore.kernel.org/r/20220201123536.12962-1-vidyas@nvidia.com
[2] https://git.kernel.org/linus/4257f7e008ea
[3] https://git.kernel.org/linus/40fb68c7725a

\
 
 \ /
  Last update: 2022-04-21 23:11    [W:0.139 / U:0.540 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site