Re: [PATCH 0/2] Fix some hotplug event issues

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On 9/21/2022 10:45, Greg KH wrote:
On Wed, Sep 21, 2022 at 09:54:31AM -0500, Mario Limonciello wrote:
On AMD Pink Sardine it's been observed that if another CM has run before
the Linux CM that some registers may not match expectations which leads
to a non-functional hotplug for PCIe devices.

Explicitly set these registers that have been observed to cause problems
with hotplug to the defaults of the USB4 spec.

Mario Limonciello (2):
   thunderbolt: Explicitly reset plug events delay back to USB4 spec
     value
   thunderbolt: Explicitly enable lane adapter hotplug events at startup

  drivers/thunderbolt/switch.c  |  5 +++++
  drivers/thunderbolt/tb.h      |  1 +
  drivers/thunderbolt/tb_regs.h |  1 +
  drivers/thunderbolt/usb4.c    | 19 +++++++++++++++++++
  4 files changed, 26 insertions(+)

Any specific reason these were not tagged for stable backports?

thanks,

greg k-h


No; no particular reason. If Mika agrees with them, I think they are good candidates to include for stable too. If I respin them, I'll tag accordingly. If Mika picks them up as v1 I think he can add the tag when committing them.



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