On Aug 24, 2015, at 5:45 AM, Markus Armbruster wrote:
> Copying the USB maintainer.
>
> Programmingkid <programmingk...@gmail.com> writes:
>
>> On Aug 8, 2015, at 8:48 AM, Programmingkid wrote:
>>
>>>
>>> On Aug 8, 2015, at 2:04 AM, Markus Armbruster wrote:
>>>>>
>>>>> USB devices can be connected with the @option{-usbdevice} commandline
>>>>> option
>>>>> -or the @code{usb_add} monitor command. Available devices are:
>>>>> +or the @code{usb_add} monitor command. Note: some devices may only work
>>>>> if
>>>>> +added like this: -usb -device <usb device>. Available devices are:
>>>>
>>>> I'm afraid "may only work" is a bit misleading. All of them work with
>>>> -device. Old ones are also supported by -usbdevice for backward
>>>> compatibility. The whole section should be rewritten to point to
>>>> -device instead of legacy -usbdevice, but that's no reason to hold up
>>>> your patch.
>>>
>>> I did not know -usbdevice was considered legacy. If that is the
>>> case, then it should probably
>>> be removed from the documentation in favor for -usb -device <device name>.
>>
>> Right now using "-usb -device mouse" doesn't work.
>
> You need to say -device usb-mouse. See docs/qdev-device-use.txt. Does
> it work for you when you do that?
It does. Thank you for this information.
>
>> Neither does
>> "-usbdevice usb-audio".
>
> Yes. Legacy -usbdevice only supports the devices that predate -device.
>
>> I think we can all agree that consistency among all the USB devices is
>> a good thing.
>> Should all USB devices be added like this: -usb -device <device name> ?
>
> "Should" is perhaps a bit strong. While -device is the recommended way
> to add a USB device, -usbdevice is still a supported (if legacy) way to
> do it.
>
> Of course, "supported, but legacy" interfaces such as -usbdevice may
> become deprecated, and then you should really move to newer interfaces,
> because deprecated ones may go away. Doesn't look terribly probable to
> me for -usbdevice, though.
>
>> This is an experimental patch of not how QEMU currently works, but how
>> I think it should work.
>>
>> This documentation adds an "usb_remove" monitor command. This isn't
>> available right now,
>> but a patch could be made to change this. Any suggestions or additions
>> are welcomed.
>
> Why do you think we need usb_remove in addition to device_del?
Ok. usb_remove isn't needed. Why is it that "device_add usb-kbd" works, but
"device_del usb-kbd" doesn't work? I am given this error message: "Device
'usb-kbd' not found".
