linux-kernel - USB: invalid maxpacket 8

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Message-ID: <CAHhAz+i88SYbYTLY4Ti50LBx6cb3yogcjRtQ4rP1HBMei=8uFQ@mail.gmail.com>
Date:   Thu, 18 Nov 2021 22:04:03 +0530
From:   Muni Sekhar <munisekharrms@...il.com>
To:     linux-usb@...r.kernel.org,
        kernelnewbies <kernelnewbies@...nelnewbies.org>,
        linux-kernel@...r.kernel.org
Subject: USB: invalid maxpacket 8

Hi all,


I'm trying to connect to a USB device on Linux PC and getting an error
about "invalid maxpacket 8". What does it mean? Does this error causes
USB packet transfer failures?

Any ideas how to fix this?

Thank you for any pointers.


dmesg log:
---------------
[1920549.030669] usb 2-2: New USB device found, idVendor=05c6, idProduct=9500

[1920549.030682] usb 2-2: New USB device strings: Mfr=0, Product=0,
SerialNumber=0

[1920549.032623] hub 2-2:1.0: USB hub found

[1920549.032672] hub 2-2:1.0: 7 ports detected

[1920549.302875] usb 2-2.1: new high-speed USB device number 98 using xhci_hcd

[1920549.391765] usb 2-2.1: config 1 interface 0 altsetting 0 bulk
endpoint 0x81 has invalid maxpacket 8

[1920549.391777] usb 2-2.1: config 1 interface 0 altsetting 0 bulk
endpoint 0x2 has invalid maxpacket 8




-- 
Thanks,
Sekhar