linux-kernel - Re: [PATCH v4 1/3] tty: rename tty_kopen() and add new function tty_kopen

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Message-ID: <20191217182754.rji5p3npzc2z4gv3@pengutronix.de>
Date:   Tue, 17 Dec 2019 19:27:54 +0100
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Jacek Anaszewski <jacek.anaszewski@...il.com>
Cc:     Pavel Machek <pavel@....cz>, Dan Murphy <dmurphy@...com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>, linux-leds@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...gutronix.de,
        linux-serial@...r.kernel.org
Subject: Re: [PATCH v4 1/3] tty: rename tty_kopen() and add new function
 tty_kopen_shared()

Hello Jacek,

On Tue, Dec 17, 2019 at 07:08:47PM +0100, Jacek Anaszewski wrote:
> I wanted to test the set but unfortunately this
> patch does not apply. See below for the apparent reason.
>
> > [...]
> > -struct tty_struct *tty_kopen(dev_t device)
> > +static struct tty_struct *tty_kopen(dev_t device, int shared)
> >  {
> >  	struct tty_struct *tty;
> >  	struct tty_driver *driver;
> 
> In mainline, even in v5.5-rc2 we have here NULL assignment:
> 
> struct tty_driver *driver = NULL;

Yeah, if you don't want to wait for Greg's tree to appear in next, this
is the patch you're missing:

	https://lkml.org/lkml/2019/12/17/101

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |