[Oneiric/Precise SRU] usb_alloc_coherent regression in cdc-wdm

Herton Ronaldo Krzesinski herton.krzesinski at canonical.com
Fri Dec 14 13:11:59 UTC 2012

SRU Justification

Impact: dma badness with cdc-wdm, regression introduced by commit
cafbe85 upstream.

Fix: Adjust usb_free_coherent calls.

Test case: it is reported the problem happens on suspend/resume with
cdc-wdm, bad dma messages reported on dmesg

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