git: usb4bsd: Fix race condition in usb_dev

[Markus Pfeiffer]

commit d3fc961d75ab3b8bd873c0258845926ab8217cc1
Author: Markus Pfeiffer <markus.pfeiffer at morphism.de>
Date:   Sun Sep 14 21:34:00 2014 +0000

    usb4bsd: Fix race condition in usb_dev
    
    The usb_filter_detach was racing the read fifo wakeup notification.

Summary of changes:
 sys/bus/u4b/usb_dev.c | 45 ++++++++++++++++++++++++++++++++-------------
 1 file changed, 32 insertions(+), 13 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/d3fc961d75ab3b8bd873c0258845926ab8217cc1


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