A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?

http://daringfireball.net/2007/07/on_top

On Tue, Nov 20, 2018 at 05:46:21PM +0100, Frédéric Parrenin wrote:
> I am runing 4.18 from debian stretch-backports.
> 
> This is the output of lsusb -t:
> 
> /:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
>     |__ Port 4: Dev 10, If 0, Class=Hub, Driver=hub/7p, 5000M
>         |__ Port 2: Dev 11, If 0, Class=Vendor Specific Class, Driver=r8152,
> 5000M
> /:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
>     |__ Port 2: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid,
> 12M
>     |__ Port 3: Dev 47, If 0, Class=Hub, Driver=hub/7p, 480M
>         |__ Port 4: Dev 48, If 0, Class=Hub, Driver=hub/4p, 480M
>             |__ Port 1: Dev 50, If 3, Class=Human Interface Device,
> Driver=usbhid, 12M
>             |__ Port 1: Dev 50, If 1, Class=Audio, Driver=snd-usb-audio, 12M
>             |__ Port 1: Dev 50, If 2, Class=Audio, Driver=snd-usb-audio, 12M
>             |__ Port 1: Dev 50, If 0, Class=Audio, Driver=snd-usb-audio, 12M
>             |__ Port 4: Dev 52, If 0, Class=Hub, Driver=hub/3p, 480M
>                 |__ Port 2: Dev 53, If 0, Class=Human Interface Device,
> Driver=usbhid, 12M
>                 |__ Port 2: Dev 53, If 1, Class=Human Interface Device,
> Driver=usbhid, 12M
>                 |__ Port 3: Dev 54, If 0, Class=Vendor Specific Class,
> Driver=, 12M
>         |__ Port 7: Dev 51, If 0, Class=Mass Storage, Driver=usb-storage,
> 480M
>         |__ Port 5: Dev 49, If 0, Class=Audio, Driver=snd-usb-audio, 480M
>         |__ Port 5: Dev 49, If 3, Class=Audio, Driver=snd-usb-audio, 480M
>         |__ Port 5: Dev 49, If 1, Class=Audio, Driver=snd-usb-audio, 480M
>         |__ Port 5: Dev 49, If 2, Class=Audio, Driver=snd-usb-audio, 480M
>     |__ Port 7: Dev 3, If 0, Class=Wireless, Driver=btusb, 12M
>     |__ Port 7: Dev 3, If 1, Class=Wireless, Driver=btusb, 12M

I do not see any USB networking device here at all.  Perhaps it is
showing up as a PCI device?

What is the output of:
        lspci -tv

That might show the network device, and if so, you will have to mess
with the PCI driver, not the USB driver for this type of feature.

thanks,

greg k-h

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