Comment 0 for bug 1855312

Revision history for this message
Kai-Heng Feng (kaihengfeng) wrote :

[Impact]
Sometimes USB hub on Dell TB16 stop working after S3.

[Fix]
Attempt to power cycle USB device when a it's stuck at eSS.Disabled
state, it's basically not recoverable.

[Test]
After applying the patch, USB ports and USB ethernet are still working
after 100 times S3 stress test.

[Regression Potential]
Low. This is a last resort attempt, in most cases this code path won't
be reached.