Linux-Bluetooth Archive on lore.kernel.org
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From: Johan Hovold <johan@kernel.org>
To: Shuah Khan <shuah@kernel.org>
Cc: marcel@holtmann.org, johan.hedberg@gmail.com,
	viro@zeniv.linux.org.uk, gregkh@linuxfoundation.org,
	linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] tty: Fix WARNING in tty_set_termios()
Date: Fri, 1 Feb 2019 10:36:39 +0100
Message-ID: <20190201093639.GB3691@localhost> (raw)
In-Reply-To: <20190201092843.GA3691@localhost>

On Fri, Feb 01, 2019 at 10:28:43AM +0100, Johan Hovold wrote:
> On Thu, Jan 31, 2019 at 04:23:59PM -0700, Shuah Khan wrote:
> > tty_set_termios() has the following WARN_ON which can be triggered with a
> > syscall to invoke TIOCSETD __NR_ioctl.
> 
> That's the only way to set the hci line discipline. And it's the
> consequent ioctl that sets the uart protocol that triggers the warning,

I meant *subsequent* ioctl, of course.

> but only if the tty is a pty master, as I mentioned before.

Johan

  reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-31 23:23 Shuah Khan
2019-02-01  0:14 ` Greg KH
2019-02-01 23:21   ` shuah
2019-02-01  9:28 ` Johan Hovold
2019-02-01  9:36   ` Johan Hovold [this message]
2019-02-01 23:20   ` shuah
2019-02-01 10:00 ` Marcel Holtmann
2019-02-01 23:18   ` shuah

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