Return-Path: <jhovold@gmail.com>
Sender: Johan Hovold <jhovold@gmail.com>
Date: Sat, 7 Oct 2017 17:14:09 +0200
From: Johan Hovold <johan@kernel.org>
To: =?iso-8859-1?Q?Fr=E9d=E9ric?= Danis <frederic.danis.oss@gmail.com>
Cc: Ian W MORRISON <ianwmorrison@gmail.com>,
	Marcel Holtmann <marcel@holtmann.org>,
	Rob Herring <robh@kernel.org>, Sebastian Reichel <sre@kernel.org>,
	Loic Poulain <loic.poulain@gmail.com>,
	Johan Hovold <johan@kernel.org>, Lukas Wunner <lukas@wunner.de>,
	Hans de Goede <hdegoede@redhat.com>,
	"bluez mailin list (linux-bluetooth@vger.kernel.org)" <linux-bluetooth@vger.kernel.org>,
	linux-serial@vger.kernel.org, linux-acpi@vger.kernel.org,
	Greg Kroah-Hartman <greg@kroah.com>
Subject: Re: [PATCH 0/2] ACPI serdev support
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On Fri, Oct 06, 2017 at 07:36:27PM +0200, Fr?d?ric Danis wrote:

> I took a look at dmesg.txt and I did not find any trace related to serdev.
> On the T100, where ttyS4 is used for Bluetooth, I can see the following 
> traces:
>  ? [?? 11.732347] serial serial0: allocated controller 
> 0xffff880036229000 id 0
>  ? [?? 11.732470] serial serial0-0: device serial0-0 registered
>  ? [?? 11.732475] serial serial0: serdev0 registered: dev:ffff880036229000
>  ? [?? 11.732478] serial serial0: tty port ttyS4 registered
> 
> If serdev registration failed you should at least get something like:
>  ??? serdev0 no devices registered: of:<> acpi:<>

Only with debugging enabled (it's a dev_dbg).

Johan