linux-kernel - Re: [RFC PATCH 2/5] hvc_console: Add tty driver flag TTY_DRIVER_RESET

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Date:	Thu, 16 Oct 2008 13:18:43 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Hendrik Brueckner <brueckner@...ux.vnet.ibm.com>
Cc:	Hendrik Brueckner <brueckner@...ux.vnet.ibm.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Linux PPC devel <linuxppc-dev@...abs.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	"Ryan S. Arnold" <rsa@...ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Christian Borntraeger <borntraeger@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [RFC PATCH 2/5] hvc_console: Add tty driver flag
 TTY_DRIVER_RESET_TERMIOS

> For my network-based hvc backend, a tty_hangup() is caused by a disconnect.

If it is network backed then you probably do want
TTY_DRIVER_TERMIOS_RESET. For a normal serial type port getty is supposed
to sort the terminal settings out. So in your case it sounds like
resetting it is the right thing to do.

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