Date: Wed, 6 Oct 2004 09:38:47 +0200
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
To: =?iso-8859-1?Q?S=E9bastien?= Hinderer 
	<Sebastien.Hinderer@libertysurf.fr>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, rmk@arm.linux.org.uk,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [Patch] new serial flow control
Message-ID: <20041006073847.GA2026@bouh.is-a-geek.org>
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	Alan Cox <alan@lxorguk.ukuu.org.uk>, rmk@arm.linux.org.uk,
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References: <20041004225430.GF2593@bouh.is-a-geek.org> <20041004225530.GG2593@bouh.is-a-geek.org> <1097016674.23924.12.camel@localhost.localdomain> <20041006071110.GA1112@galois>
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Le mer 06 oct 2004 ? 09:11:10 +0200, S?bastien Hinderer a tapot? sur son clavier :
> > > Here is patch for 2.6
> > 
> > How is this different from CRTSCTS ?
> 
> I'd say it is symmetric. I think the roles of RTS and CTS are exchanged.
> Sam, am I right ?

No: CRTSCTS is a one-signal-for-each-way flow control: each
side of the link tells whether it can receive data. CTVB is a
two-signals-for-only-one-way flow control: the device tells when it
wants to send data, the PC acknowledges that, and then one frame of
data can pass.

Regards,
Samuel Thibault
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