linux-kernel - Re: [xhci] usb 4-1: reset SuperSpeed Gen 1 USB device number 2 using xhci

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Date:   Fri, 5 Mar 2021 14:30:03 -0500
From:   Alan Stern <stern@...land.harvard.edu>
To:     Sedat Dilek <sedat.dilek@...il.com>
Cc:     Mathias Nyman <mathias.nyman@...el.com>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [xhci] usb 4-1: reset SuperSpeed Gen 1 USB device number 2 using
 xhci_hcd

On Fri, Mar 05, 2021 at 08:22:22PM +0100, Sedat Dilek wrote:
> The quirks match:
> 
> [Fri Mar  5 20:06:56 2021] usb-storage 4-1:1.0: USB Mass Storage device detected
> [Fri Mar  5 20:06:56 2021] usb-storage 4-1:1.0: Quirks match for vid
> 174c pid 55aa: 400000
> 
> That seems not to be the trick:
> 
> root# LC_ALL=C dmesg -T | grep 'usb 4-1:'
> [Fri Mar  5 20:06:55 2021] usb 4-1: new SuperSpeed Gen 1 USB device
> number 2 using xhci_hcd
> [Fri Mar  5 20:06:55 2021] usb 4-1: New USB device found,
> idVendor=174c, idProduct=55aa, bcdDevice= 1.00
> [Fri Mar  5 20:06:55 2021] usb 4-1: New USB device strings: Mfr=2,
> Product=3, SerialNumber=1
> [Fri Mar  5 20:06:55 2021] usb 4-1: Product: MEDION HDDrive-n-GO
> [Fri Mar  5 20:06:55 2021] usb 4-1: Manufacturer: MEDION
> [Fri Mar  5 20:06:55 2021] usb 4-1: SerialNumber: 3180000000000000092C
> [Fri Mar  5 20:06:57 2021] usb 4-1: reset SuperSpeed Gen 1 USB device
> number 2 using xhci_hcd

Okay, that indicates the ATA commands are being sent not by the kernel 
but by some program.  I'm not sure how you can easily find out which 
program; probably the best thing to do is turn them off one by one until 
you find the one responsible.

Alan Stern