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Date:      Mon, 3 Jul 2000 18:10:54 +0100 (BST)
From:      Nick Hibma <n_hibma@calcaphon.com>
To:        Poul-Henning Kamp <phk@critter.freebsd.dk>
Cc:        Warner Losh <imp@village.org>, Garrett Wollman <wollman@khavrinen.lcs.mit.edu>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG
Subject:   Re: cvs commit: src/sys/sys bus.h bus_private.h src/sys/kern subr_bus.c
Message-ID:  <Pine.BSF.4.20.0007031809090.21511-100000@localhost>
In-Reply-To: <7213.962643120@critter.freebsd.dk>

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> it probably is the correct behaviour for pccard and cardbus to go away
> and stay away until replugged.
> 
> It is probably the wrong behaviour for practically any other bus based
> technology (cPCI etc).
> 
> I have *no* idea which category USB lands in.

Devices loose all state when disconnected and should be treated as
uninitialised when coming back.

Even host to host cables tend to treat loss of connection as fatal,
allthough at least one of them remains powered if one of the connections
is present, for reasons unknown ti me.

Nick
--
n_hibma@webweaving.org
n_hibma@freebsd.org                                          USB project
http://www.etla.net/~n_hibma/



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