linux-kernel - Re: Handshaking on USB serial devices

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Message-ID: <20080221151549.0fa72422@core>
Date:	Thu, 21 Feb 2008 15:15:49 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	David Newall <davidn@...idnewall.com>
Cc:	Greg KH <greg@...ah.com>, linux-usb@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Handshaking on USB serial devices

> developing is entirely wrong.  Oh well.  Mind you, providing a
> write_room function is NOT a real solution; it merely reduces the
> condition to a usually-winnable race.  (Ironically, when I back-ported
> the 2.6 driver, I excluded its new write_room function.  Mistake.)

What race do you see left ?

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