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Re: [Qemu-arm] [PATCH-for-4.1 2/7] hw/usb: Bluetooth HCI USB depends on

From: Philippe Mathieu-Daudé
Subject: Re: [Qemu-arm] [PATCH-for-4.1 2/7] hw/usb: Bluetooth HCI USB depends on USB & BLUETOOTH
Date: Fri, 12 Jul 2019 18:45:08 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0

On 7/12/19 4:58 PM, Paolo Bonzini wrote:
> On 12/07/19 16:16, Philippe Mathieu-Daudé wrote:
>> I wondered but am not sure, it is default to Yes, but Bluetooth code is
>> deprecated and print a big warning when you use it, so I think this
>> device should not be selected as default, neither pull in the deprecated
>> bluetooth code.
>> So personally I'd respin without 'default y'. If you have a good reason
>> to use it, I can use 'select' instead.
> There are two separate questions.  One is whether USB_BLUETOOTH should
> select BLUETOOTH and the answer there is almost certainly yes (in the
> words of kconfig.rst, BLUETOOTH is a "subsystem" while USB_BLUETOOTH is
> a "device"; devices select the bus that the device provides).

Fair :)

> The other is whether we want to enable USB_BLUETOOTH by default.  I
> wouldn't have any problem there, but if we disable it basically no one
> would ship/use it and we might as well delete the whole thing.

The only user is the ARM Nokia N-series board, so if we set default=n,
the Bluetooth subsystem will be only be selected on arm-softmmu (and

This seems a sane cleanup. If another board wants to use the bluetooth
code, it should probably move it out of the orphan status.

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