Return-Path: <cyrus@holtmann.org>
Subject: Re: ioctl(RFCOMMCREATEDEV) failed: File descriptor in bad state
From: Marcel Holtmann <marcel@holtmann.org>
To: "Zhang, Zhenhua" <zhenhua.zhang@intel.com>
Cc: "linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>
In-Reply-To: <0463F45F3606F4428ED35AC8C709F92E089A4160F9@pdsmsx502.ccr.corp.intel.com>
References: <0463F45F3606F4428ED35AC8C709F92E089A4160F9@pdsmsx502.ccr.corp.intel.com>
Content-Type: text/plain
Date: Mon, 14 Sep 2009 04:01:48 -0700
Message-Id: <1252926108.3421.5.camel@localhost.localdomain>
Mime-Version: 1.0
Sender: linux-bluetooth-owner@vger.kernel.org
List-ID: <linux-bluetooth.vger.kernel.org>

Hi,

> I am calling ioctl(RFCOMMCREATEDEV) to create tty device from a rfcomm fd 
> using hands-free profile. If the HF send connection request to AG and make
> rfcomm connect, the tty could be made successfully. However, if the 
> AG(mobile) side make request to create rfcomm connection, the rfcomm could
> be created but fail to create the tty device. The kernel returns error 
> because socket is not connected, see below code. Any idea? Thanks much!

why do you wanna create the TTY in the first place? Going via the TTY
layer is pretty bad idea. Don't even think about doing that. Use the
RFCOMM socket.

Regards

Marcel