Re: [Qemu-devel] [PATCH v2] usb: Remove legacy -usbdevice option

[Thomas Huth <thuth@redhat.com>]

On 09.01.2018 12:17, Paolo Bonzini wrote:
> On 09/01/2018 12:00, Thomas Huth wrote:
>> On 09.01.2018 10:58, Paolo Bonzini wrote:
>>> On 08/01/2018 08:23, Thomas Huth wrote:
>>>>>> But instead of introducing a new "-braille" parameter, maybe we should
>>>>>> rather keep some of the convenience "-usbdevice" possibilities around?
>>>>>> E.g. keep "-usbdevice braille", "-usbdevice mouse", etc. but remove
>>>>>> things like "-usbdevice serial" and "-usbdevice host" where the code is
>>>>>> rather ugly and the user do not gain much in comparison to "-device" ?
>>>>> That would work too.  But I'm not sure why keep all the usbdevice
>>>>> infrastructure when we can do the same (at the price of a small cmdline
>>>>> incompatibility) with only 50 lines of code.
>>>> I'm just afraid that we will end up with more new parameters in the end
>>>> than just "-braille" - or do we feel confident enough that "-usbdevice
>>>> braille" is the only one that would need a sugared replacement?
>>>
>>> I agree that we should plan for suboptions, so it could be "-braille
>>> [serial|usb]" for now.
>>
>> I'm rather afraid that someone else will also complain about the removal
>> of the other usbdevice options, so that we'll finally end up with new
>> -usbhost, -usbbt and -usbyounameit convenience options... in that case
>> it might be better to keep "-usbdevice" instead?
> 
> We can and should say no.  Sometimes we can also say yes though. :)
> 
> I just think that Braille is worth a special case because a subset of
> our user base (blind people) will use it 100% of the time, plus it is
> not supported by libvirt and hence virt-manager.

OK, then let's go forward and use your "-braille serial|usb" patch, and
nuke the -usbdevice option completely (assuming Gerd agrees, being the
USB maintainer).

 Thomas