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Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk

From Alan Stern <stern@rowland.harvard.edu>
Newsgroups linux.kernel
Subject Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk
Date 2017-03-13 02:40 +0100
Message-ID <tkn7P-1ma-1@gated-at.bofh.it> (permalink)
References <tkjGV-7nz-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Sun, 12 Mar 2017, Dave Mielke wrote:

> [quoted lines by Alan Stern on 2017/03/12 at 17:18 -0400]
> 
> >Interesting.  This is a high-speed device that mistakenly uses the 
> >low/full-speed encoding for an interrupt bInterval value?
> 
> Yes.
> 
> >That's pretty unusual.  Most HID devices (which includes the Braille
> >devices I have heard of) run at low speed, and a few of them run at 
> >full speed.  I can't remember any running at high speed.
> 
> According to my collection of data, 5 say 1.00, 15 say 1.1, and 21 say 2.0.

A device's speed is only partially related to its USB version.  A
USB-1.1 device can run at low speed or full speed.  A USB-2 device can
run at low, full, or high speed.  And a USB-3 device can run at low,
full, high, or Super speed.

Alan Stern

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[PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Samuel Thibault <samuel.thibault@ens-lyon.org> - 2017-03-12 21:20 +0100
  Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Alan Stern <stern@rowland.harvard.edu> - 2017-03-12 22:20 +0100
    Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Samuel Thibault <samuel.thibault@ens-lyon.org> - 2017-03-12 22:50 +0100
    Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Dave Mielke <dave@mielke.cc> - 2017-03-12 23:00 +0100
      Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Alan Stern <stern@rowland.harvard.edu> - 2017-03-13 02:40 +0100
        Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Dave Mielke <dave@mielke.cc> - 2017-03-13 02:50 +0100
          Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Alan Stern <stern@rowland.harvard.edu> - 2017-03-13 02:50 +0100
            Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Samuel Thibault <samuel.thibault@ens-lyon.org> - 2017-03-13 08:10 +0100
              Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Alan Stern <stern@rowland.harvard.edu> - 2017-03-14 02:50 +0100

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