linux-kernel - Re: [PATCHv2] irtty-sir.c: Do not set_termios() on irtty

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Message-ID: <20140217231319.5545dac1@alan.etchedpixels.co.uk>
Date:	Mon, 17 Feb 2014 23:13:19 +0000
From:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
To:	Tommie Gannert <tommie@...nert.se>
Cc:	Samuel Ortiz <samuel@...tiz.org>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2] irtty-sir.c: Do not set_termios() on irtty_close()

> v2: Resend due to mail format issues. More Thunderbird settings applied.
> 
> I know very little of this code, and I'm not sure this is a good solution,
> so here's some background:

I wouldn't worry too much. I'm amazed the code even works these days.
It's incredibly bitrotted and doesn't use the tty layer properly (mind
you it never did)


> The effect of this is that /dev/ttyUSB* is still in use, and thus leaking
> at least dev nodes. This is a minimal patch that solves that oops.
> --- linux-3.12/drivers/net/irda/irtty-sir.c.orig	2014-02-12 21:36:46.132496089 +0000
> +++ linux-3.12/drivers/net/irda/irtty-sir.c	2014-02-12 21:57:21.635843884 +0000
> @@ -521,7 +521,6 @@ static void irtty_close(struct tty_struc
>  	sirdev_put_instance(priv->dev);
>  
>  	/* Stop tty */
> -	irtty_stop_receiver(tty, TRUE);
>  	clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
>  	if (tty->ops->stop)
>  		tty->ops->stop(tty);

This change looks correct to me. The three lines below your change are
amusing all incorrect and should probably also all be deleted.

Alan
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