Re: [PATCH v4 0/2] PCI: Fix the issue of failed speed limit lifting

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On Tue, 24 Jun 2025, Bjorn Helgaas wrote:

> > Jiwei Sun (2):
> >   PCI: Fix the wrong reading of register fields
> >   PCI: Adjust the position of reading the Link Control 2 register
> > 
> >  drivers/pci/pci.h    | 32 +++++++++++++++++++-------------
> >  drivers/pci/quirks.c |  6 ++++--
> >  2 files changed, 23 insertions(+), 15 deletions(-)
> 
> Sorry, this totally slipped through the cracks.  I applied both of
> these to pci/enumeration for v6.17.
> 
> Andrew reported tripping over this issue fixed by the first patch, and
> Lukas also posted a similar patch [1] to fix it, so I updated the
> commit log as below to include details of Andrew's report.
> 
> As Lukas did, I added a stable tag but made it for v6.13+ (not v6.12+)
> because I think the actual problem showed up with de9a6c8d5dbf
> ("PCI/bwctrl: Add pcie_set_target_speed() to set PCIe Link Speed"),
> not with f68dea13405c ("PCI: Revert to the original speed after PCIe
> failed link retraining").

 Thank you for taking care of these issues while I've been distracted with 
no resources available to actually try things in my lab.

  Maciej




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