[coreboot-gerrit] Change in coreboot[master]: UNTESTED libpayload: Use interrupt transfers for USB hubs

[Nico Huber (Code Review)]

Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/18499 )

Change subject: UNTESTED libpayload: Use interrupt transfers for USB hubs
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Patch Set 2:

Heh, three days after abandoning, it suddenly became urgent :)

I have a host controller that periodically stalls the control EP
for hubs. No idea what the actual issue is, but hopefully it will
be mitigated by reducing the amount of control transfers (without
this patch, as many as possible).