linux-kernel - Re: [PATCH 0/2] Add API to retrieve the Bluetooth Device Address (BD

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Message-ID: <20180921164541.GX22824@google.com>
Date:   Fri, 21 Sep 2018 09:45:41 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Sinan Kaya <okaya@...eaurora.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Marcin Wojtas <mw@...ihalf.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        Balakrishna Godavarthi <bgodavar@...eaurora.org>,
        Loic Poulain <loic.poulain@...aro.org>,
        Brian Norris <briannorris@...omium.org>
Subject: Re: [PATCH 0/2] Add API to retrieve the Bluetooth Device Address
 (BD_ADDR)

On Fri, Sep 21, 2018 at 01:25:45AM -0400, Sinan Kaya wrote:
> On 9/20/2018 7:19 PM, Matthias Kaehlcke wrote:
> > If the existing users populate a custom property with the BD address
> > in the bootloader you could roll out a bootloader change. You'd have
> > to make sure that bootloader and kernel match. The bootloader could
> > still populate the custom property to be compatible with 'old'
> > kernels.
> 
> If there is no standard about the name of the property, this probably
> doesn't belong to property.c but should rather be hosted in bluetooth
> directory for consumption among the bluetooth drivers.

Well, there is a generic binding
(https://elixir.bootlin.com/linux/v4.18/source/Documentation/devicetree/bindings/net/bluetooth.txt),
the fact that there are drivers that aren't adhering to it doesn't
change that.