xHCI enable slot command if there are several ports connected

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Hi guys,

Could someone can give me a hint to this question:

if there are multiple connected USB devices (multiple ports with set PORTSC.CCS bit) to xHCI and I issue the very first enable slot command which port will be "enabled"?

I don't see anything regarding this in specification (also I cannot find anything like this in linux xhci driver).

Motivation is just simple: if I run into situation where I need to reset device through PORTSC how can I distinguish between different ports?






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