I need guidance About the TD queue processing.
Let me take usb_set_address as example.
Before TD queue processing,the TD queue as following:
TailP
|
|
V
HeadP---->dummy TD------>td[0]------>td[1](usb_set_address just fill two td. dummy TD->urb = correct urb. td[0]->urb = correct urb. td[1]->urb = 0.When HeadP==TailP,the queue processing is end. Actually td[1] will not be processing.So we needn't set its urb)
After TD queue processing,the queue as following:
HccaDoneHead---->td[0]----->dummy TD
(dummy TD->hwNextTD = 0)
Am I right?
Regards yfw
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