[PATCH 0/4 v6] xHCI: Isoc transfer implementation

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Hi Sarah,

This is v6 of xHCI isoc patchset.

Changelog from v5:
1. Refine handle_tx_event(), break it into smaller functions to increase
readability. Also remove unnecessary print messages in the interrupt
context.

2. Remove handle_td jump, use do-while clause instead.

3. Fix the urb_done bug.

4. Rename urb_free_priv() to xhci_urb_free_priv().

I have done 24 hours stress test with a USB3.0 HDD doing r/w operations,
a USB2.0 hub plugged with a USB2.0 TV tuner broadcasting TV and a USB1.1
webcam running.

Please note this patchset is based on your revert-link-trb branch,
commit 5162708fc3c0. And you also need the allocate bigger ring for isoc
endpoint patch to get the isoc devices running.

Thanks,
Andiry 

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