Date: Wed, 25 Jun 2003 19:03:31 +0300 From: Danny Braniss <danny@cs.huji.ac.il> To: "M. Warner Losh" <imp@bsdimp.com> Cc: freebsd-hackers@freebsd.org Subject: Re: USB, select/poll for ucom Message-ID: <E19VCk7-000254-00@cs.huji.ac.il> In-Reply-To: Message from "M. Warner Losh" <imp@bsdimp.com> <20030625.094225.09510301.imp@bsdimp.com>
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> I'm able to use ppp with umodem/ucom. My brother uses ulpcom/ucom for > his ppp needs. I'm pretty sure that select is involved. :-) > > >From what I can see in the code, I'd expect that it would work because > the ttypoll routine is specified for the poll routine. Why do you > think it wouldn't work? well, for one, my program doesn't work :-), it works with the RS232 version. so i started to poke around, and did some reading, and as far as i could tell, the read(2) has to be initiated by the host, but my knowledge of usb is close to zero - it was zero 2 days ago, but still looking for some better docs, and polish my english - as far as i remember interrupt is not polling, but the ohci docs imply that :-) danny
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