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From: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <4055e106-b24f-09b5-29cd-a4927ecad433@redhat.com>
Date: Thu, 4 Jan 2018 18:11:00 +0100
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Subject: Re: [Qemu-devel] [PATCH v2] usb: Remove legacy -usbdevice option
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To: Samuel Thibault <samuel.thibault@gnu.org>
Cc: Thomas Huth <thuth@redhat.com>, Peter Maydell <peter.maydell@linaro.org>, kraxel@redhat.com, qemu-devel@nongnu.org

On 04/01/2018 16:56, Samuel Thibault wrote:
>> However, adding magic to "-device usb-braille" that creates both a
>> front-end and a back-end is completely the opposite of sane...
> Well, this is also what happens with -device usb-mouse, usb-kbd etc.:
> they also plug with keyboard & mouse pipes of the qemu graphical
> frontend. braille is just the same vein for the user.

No, they don't create a new UI object magically that wasn't there
before.  They just let you add a device, e.g. a USB tablet, that listens
on an _existing_ UI (GTK+ or SDL or similar).

Paolo