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Date: Tue, 17 May 2011 12:37:10 +0200
From: Kevin Wolf <kwolf@redhat.com>
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Subject: Re: [Qemu-devel] Should new USB devices such as usb-ccid support
 legacy -usbdevice?
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To: Markus Armbruster <armbru@redhat.com>
Cc: Alon Levy <alevy@redhat.com>, qemu-devel@nongnu.org, Gerd Hoffmann <kraxel@redhat.com>

Am 16.05.2011 10:33, schrieb Markus Armbruster:
> Anthony Liguori <anthony@codemonkey.ws> writes:
> 
>> On 05/13/2011 11:36 AM, Markus Armbruster wrote:
>>> When Gerd qdevified USB, he kept legacy -usbdevice working (commit
>>> 0958b4cc...).  What about new USB devices?  Should they get a legacy
>>> syntax, too?
>>>
>>> The only existing new device is usb-ccid, and it got one in commit
>>> 36707144.
>>
>> What keeps -usbdevice from being a light wrapper to -device such that
>> no future code is needed for this?
> 
> What would that buy us?  Inhowfar is -usbdevice any lighter than
> -device?

One difference is that it automagically gives you an USB host
controller, whereas with -device you need to specify one explicitly.

Kevin