Date: Tue, 29 Mar 2005 10:23:30 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: "M. Warner Losh" <imp@bsdimp.com> Cc: ticso@cicely.de Subject: Re: Reattach/redetect allways connected umass device - is it possible ? Message-ID: <40083.1112084610@critter.freebsd.dk> In-Reply-To: Your message of "Tue, 29 Mar 2005 01:16:33 PDT." <20050329.011633.33548829.imp@bsdimp.com>
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In message <20050329.011633.33548829.imp@bsdimp.com>, "M. Warner Losh" writes: >: >: Only partial. >: > >: >You should be getting a change notification on the first access after >: >the change happens... >: >: Right, that's what I mean by "partial". Full support would be an interrupt >: when a media is removed or inserted. > >And what hardware, apart from PC Card, actually supports this? >From my point of view that is not really a relevant question in this discussion. The driver write will have to work with whatever his hardware can do, and compensate for less than ideal support with polling if necessary. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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