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How is it even possible? As far as I see, Linux simply queues three TRBs for a control URB. There are 255 slots in a segemnt, so exactly 85 URBs should fit, and then back to the first slot.
three TRBs for a control URB. There are 255 slots in a segemnt, so exactly 85 URBs should fit, and then back to the first slot.
Not all control transfers have a Data stage TRB.
-Mathias
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