Hans Petter Selasky 2994bac4ba Add some more spinlocks to protect the state of the USB transfer
queue. Rename some functions to indicate locking requirements.

MFC after:	1 week
2014-05-29 11:11:19 +00:00
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2014-03-17 07:19:19 +00:00
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2014-05-09 14:28:11 +00:00