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	2017-03-14 02:50 +0100
Message-ID	<tkJL3-1e8-7@gated-at.bofh.it> (permalink)
References	<tkshb-5nd-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Mon, 13 Mar 2017, Samuel Thibault wrote:

> Alan Stern, on dim. 12 mars 2017 21:40:33 -0400, wrote:
> > On Sun, 12 Mar 2017, Dave Mielke wrote:
> > > [quoted lines by Alan Stern on 2017/03/12 at 21:31 -0400]
> > > 
> > > >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.
> > > 
> > > Yes, I did know this, so maybe I misunderstood what you were wondering about. 
> > > Were you wondering why 64ms was too long?
> > 
> > No, I was wondering why an HID device would run at high speed.  Both
> > you and Samuel implied that this was because it was a USB-2 device.  
> > But that is not an adequate answer, because it is perfectly valid for a 
> > USB-2 device to run at full speed.
> 
> to_usb_device(ddev)->speed really is USB_SPEED_HIGH, otherwise the quirk
> wouldn't work :)

Indeed; I believe you.  It's just odd and a little noteworthy, that's
all.

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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