The following reply was made to PR kern/34070; it has been noted by GNATS.

From: Matthias Drochner <M.Drochner@fz-juelich.de>
To: Iain Hibbert <plunky@rya-online.net>
Cc: gnats-bugs@NetBSD.org, kern-bug-people@NetBSD.org,
	gnats-admin@NetBSD.org, netbsd-bugs@NetBSD.org, wulf@NetBSD.org
Subject: Re: kern/34070: btconfig: SIOCSBTFLAGS: Resource temporarily 
 unavailable
Date: Tue, 28 Nov 2006 21:41:27 +0100

 plunky@rya-online.net said:
 > Do you have any other USB hardware running through the ehci driver?
 
 I've tried a mouse and an external harddisk, both still work.
 
 > I'm a
 > bit concerned that it looks as if this would affect all ehci transfers, so
 > surely there would have been other failures reported..?
 
 The change does only affect "short transfers", this is where the
 length of the read transfer isn't known in advance. I didn't check
 all the drivers in detail, but usually the length is known -- eg
 the report size for HIDs or the transfer size for mass storage.
 In addition, the bug causing the hangs did only strike if the
 difference between the attempted and the real transfer crossed
 a blocksize boundary, which at least requires that the attempted
 transfer is larger than the blocksize.
 In addition, full/low speed devices do only touch ehci if there
 is a high-speed hub in between.
 This all makes it prety plausible for me that there were no
 bug reports before.
 
 I'll just commit that change; it is small enough to have it
 backed out if serious problems show up.
 
 best regards
 Matthias