On Sun, 5 Feb 2023, Maciej W. Rozycki wrote:

>  This is v6 of the change to work around a PCIe link training phenomenon 
> where a pair of devices both capable of operating at a link speed above 
> 2.5GT/s seems unable to negotiate the link speed and continues training 
> indefinitely with the Link Training bit switching on and off repeatedly 
> and the data link layer never reaching the active state.

 Ping for: 
<https://lore.kernel.org/linux-pci/alpine.DEB.2.21.2302022022230.45310@angie.orcam.me.uk/>.

  Maciej