[PATCH][SRU][OEM-5.14] USB4 interdomain communication problems

Alex Hung alex.hung at canonical.com
Sat Oct 9 02:06:36 UTC 2021

BugLink: https://bugs.launchpad.net/bugs/1945361


  Yellow carp w/ SW CM bi-directional interdomain communication may have some
  problems that the response packets are lost sometimes within the stipulated


  Enable the retry by increasing retry count from 1 to 4.

  The patch is in linux-next (tag next-20211007) and can be found @ https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/thunderbolt/ctl.c?id=641cdbea7635be3a177dbdf81356ccb16f3769e3

  This is requested and tested by AMD.

[Where problems could occur]

  Low risk. This only affects small number of AMD systems that would excess the
  time. Systems without problems won't be affected.

Sanjay R Mehta (1):
  thunderbolt: Enable retry logic for intra-domain control packets

 drivers/thunderbolt/ctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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