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

From	Samuel Thibault <samuel.thibault@ens-lyon.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk
Date	2017-03-14 09:50 +0100
Message-ID	<tkQjv-5Y2-1@gated-at.bofh.it> (permalink)
References	<tknhv-1pV-3@gated-at.bofh.it> <tkJL3-1e8-11@gated-at.bofh.it> <tkKnM-1IQ-5@gated-at.bofh.it>
Organization	I am not organized

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Dave Mielke, on lun. 13 mars 2017 22:20:01 -0400, wrote:
> It's possible that this device is using high speed because it offers a feature 
> to transfer its internal clipboard to the host, and it allows that clipboard to 
> contain lots of data. Interestingly, though, hidden within a usage note, they 
> do observe that, so far, they've been unable to achieve a transfer speed faster 
> than 5,000 characters in seven minutes. It looks to me like this is exactly due 
> to their incorrect setting of bInterval. :-) 

Well, still, with a 10ms interval, one can achieve at best 100 key
press events per second, thus 50 characters per second, i.e. not even
1200bps...

Samuel

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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 Dave Mielke <dave@mielke.cc> - 2017-03-13 11:40 +0100
  Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Alan Stern <stern@rowland.harvard.edu> - 2017-03-14 02:50 +0100
    Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Dave Mielke <dave@mielke.cc> - 2017-03-14 03:30 +0100
      Re: [PATCH] usb-core: Add MS_INTR_BINTERVAL USB quirk Samuel Thibault <samuel.thibault@ens-lyon.org> - 2017-03-14 09:50 +0100

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