On Sun, Jan 24, 2021 at 04:35:13AM +0000, bugzilla-daemon@bugzilla.kernel.org wrote:

https://bugzilla.kernel.org/show_bug.cgi?id=211325

            Bug ID: 211325
           Summary: usbhid.mousepoll kernel cmd option not working
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.11-rc3
          Hardware: ARM
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: low
          Priority: P1
         Component: USB
          Assignee: drivers_usb@kernel-bugs.kernel.org
          Reporter: mathias.steiger@gmail.com
        Regression: No

It doesn't matter what value I use, it is treated as if unset (i.e. "0").

Please email the linux-input@vger.kernel.org list about this.