linux-kernel - Re: [PATCH] Fix data loss in cdc-acm

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Message-ID: <5627A830.6050609@hurleysoftware.com>
Date:	Wed, 21 Oct 2015 10:58:56 -0400
From:	Peter Hurley <peter@...leysoftware.com>
To:	Oliver Neukum <oneukum@...e.com>
Cc:	Johan Hovold <johan@...nel.org>, Sven Brauch <mail@...nbrauch.de>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	Toby Gray <toby.gray@...lvnc.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-serial@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH] Fix data loss in cdc-acm

On 10/21/2015 08:09 AM, Peter Hurley wrote:
> Be aware that while the N_TTY line discipline ensures that put_char()
> and write() usage will not be interleaved without flush_chars(), other
> line disciplines might not, so at least be sure that driver won't
> crash if that happens.

Sorry, I take that back: certain echoes are output via write() in
OPOST mode, specifically for O_ONLCR and XTABS.
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