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

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Date:   Wed, 24 Feb 2021 14:44:36 +0100
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     Mathias Nyman <mathias.nyman@...el.com>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [xhci] usb 4-1: reset SuperSpeed Gen 1 USB device number 2 using xhci_hcd

Hi Mathias,

I am here on Linux-v5.11-10201-gc03c21ba6f4e.

I see a lot xhci-resets in my dmesg-log:

root# LC_ALL=C dmesg -T | grep 'usb 4-1: reset SuperSpeed Gen 1 USB
device number 2 using xhci_hcd' | wc -l
75

This is what I have:

root# lsusb -s 004:001
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

root# lsusb -s 004:002
Bus 004 Device 002: ID 174c:55aa ASMedia Technology Inc. ASM1051E SATA
6Gb/s bridge, ASM1053E SATA 6Gb/s bridge, ASM1153 SATA 3Gb/s bridge,
ASM1153E SATA 6Gb/s bridge

My external USB 3.0 HDD contains the partition with my Debian-system
and is attached to the above xhci bus/device.

Can you enlighten what this means?
Is this a known issue?
Is there a fix around?

BTW, in which Git tree is the xhci development happening?
Can you point me to it?

I am attaching my linux-config and full dmesg-log.

Also I have attached outputs of:

$ sudo lsusb -vvv -d 1d6b:0003
$ sudo lsusb -vvv -d 174c:55aa

If you need further information, please let me know.

Thanks.

Regards,
- Sedat -

View attachment "dmesg-T_5.11.0-10201.1-amd64-clang13-lto.txt" of type "text/plain" (84749 bytes)

Download attachment "config-5.11.0-10201.1-amd64-clang13-lto" of type "application/octet-stream" (239346 bytes)

View attachment "lsusb-vvv-d-1d6b-0003.txt" of type "text/plain" (2751 bytes)

View attachment "lsusb-vvv-d-174c-55aa.txt" of type "text/plain" (3123 bytes)