Bug in SCSI async probing

[Alan Stern]

James & Arjan:

Am I missing something here?  It looks like

	fastboot: make scsi probes asynchronous

has introduced a bug in the sd probing code.  AFAICT, there is now
nothing to prevent do_scan_async() from returning before
sd_probe_async() has run.

Doesn't this mean that there's nothing to prevent sd_remove() from 
being called and trying to unregister the disk _before_ 
sd_probe_async() has managed to register it?

Alan Stern

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