USB HDD needs replugging?

[Warren Block]

On Sat, 21 Aug 2010, Hans Petter Selasky wrote:

> On Saturday 21 August 2010 18:26:21 indulekha wrote:
>> what is the exact
>> command to enable or disable quirks, etc.
>
> Hi,
>
> The format is:
>
> usbconfig add_dev_quirk_vplh <vid> <pid> <lo_rev> <hi_rev> <quirk>
>
> vid: VendorID
> pid: ProductID
>
> lo_rev: 0
> Hi_rev 0xffff
>
> quirk: your quirk UQ_XXX
>
> If the driver shows a disconnect message or attach failure, then I think
> quirks won't help.
>
> Instead of replugging your device, it is sometimes possible to make the device
> available using:
>
> usbconfig -u X -a Y reset
>
> Where X and Y are the ugenX.Y for your root HUB or your device.
>
> You need to be root to execute these commands.

A real, working example of this would be an excellent addition to 
usbconfig(8).  If you provide one, and explain what it does, I'll create 
a patch.