Will Andrews ff9ae2210b Fix a FWXF_INQ race in the firewire driver.
sys/dev/firewire/firewire.c:
	In fw_xfer_unload() expand lock coverage so that
	the test for FWXF_INQ doesn't race with it being
	cleared in another thread.

Submitted by:	gibbs
MFC after:	1 week
Sponsored by:	Spectra Logic
MFSpectraBSD:	1110207 on 2015/01/02
2015-01-21 20:02:16 +00:00
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