linux-kernel - Re: [SOLVED] Serial buffer corruption [was Re: FTDI usb-serial possible bug]

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Date:	Sat, 5 May 2007 17:36:47 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Paul Fulghum <paulkf@...rogate.com>
Cc:	Antonino Ingargiola <tritemio@...il.com>,
	linux-usb-users@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [SOLVED] Serial buffer corruption [was Re: FTDI usb-serial
 possible bug]

> In the serial driver this usually just results in dropping
> RTS to signal the remote end to stop sending. The serial
> driver always immediately gives receive data to the tty buffering
> without regard to the throttled state.
> 
> I would argue that cdc-acm should do the same as the serial driver.

This is a bug in cdc-acm really. It should not double buffer, but to be
fair to the authors prior to the new tty buffering it *had* to do this.

Alan
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