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Re: [PATCH 2/2] dell-wmi: Process only one event on devices with interface version 0

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From Pali Rohár <pali.rohar@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH 2/2] dell-wmi: Process only one event on devices with interface version 0
Date Mon, 28 Dec 2015 14:50:02 +0100
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X-Original-Cc Matthew Garrett <mjg59@srcf.ucam.org>, Darren Hart <dvhart@infradead.org>, Gabriele Mazzotta <gabriele.mzt@gmail.com>, Andy Lutomirski <luto@kernel.org>, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org
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On Monday 28 December 2015 14:40:56 Michał Kępień wrote:
> > BIOS/ACPI on devices with WMI interface version 0 does not clear
> > buffer before filling it. So next time when BIOS/ACPI send WMI
> > event which is smaller as previous then it contains garbage in
> > buffer from previous event.
> > 
> > BIOS/ACPI on devices with WMI interface version 1 clears buffer and
> > sometimes send more events in buffer at one call.
> 
> Are the explanations above based on your observations or perhaps some
> documentation?

Just observation from all DSDT files which I have seen.

-- 
Pali Rohár
pali.rohar@gmail.com

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[PATCH 0/2] Fixes for dell-wmi Pali Rohár <pali.rohar@gmail.com> - 2015-12-24 22:20 +0100
  [PATCH 1/2] dell-wmi: Check if Dell WMI descriptor structure is valid Pali Rohár <pali.rohar@gmail.com> - 2015-12-24 22:30 +0100
    Re: [PATCH 1/2] dell-wmi: Check if Dell WMI descriptor structure is valid Andy Lutomirski <luto@amacapital.net> - 2015-12-25 02:30 +0100
      Re: [PATCH 1/2] dell-wmi: Check if Dell WMI descriptor structure is valid Pali Rohár <pali.rohar@gmail.com> - 2015-12-25 14:10 +0100
    Re: [PATCH 1/2] dell-wmi: Check if Dell WMI descriptor structure is  valid Michał Kępień <kernel@kempniu.pl> - 2015-12-28 14:40 +0100
      Re: [PATCH 1/2] dell-wmi: Check if Dell WMI descriptor structure is valid Pali Rohár <pali.rohar@gmail.com> - 2015-12-28 15:10 +0100
        Re: [PATCH 1/2] dell-wmi: Check if Dell WMI descriptor structure is  valid Michał Kępień <kernel@kempniu.pl> - 2015-12-29 13:50 +0100
          Re: [PATCH 1/2] dell-wmi: Check if Dell WMI descriptor structure is valid Pali Rohár <pali.rohar@gmail.com> - 2015-12-29 17:10 +0100
            Re: [PATCH 1/2] dell-wmi: Check if Dell WMI descriptor structure is  valid Michał Kępień <kernel@kempniu.pl> - 2015-12-30 12:30 +0100
  [PATCH 2/2] dell-wmi: Process only one event on devices with interface version 0 Pali Rohár <pali.rohar@gmail.com> - 2015-12-24 22:30 +0100
    Re: [PATCH 2/2] dell-wmi: Process only one event on devices with  interface version 0 Michał Kępień <kernel@kempniu.pl> - 2015-12-28 14:50 +0100
      Re: [PATCH 2/2] dell-wmi: Process only one event on devices with interface version 0 Pali Rohár <pali.rohar@gmail.com> - 2015-12-28 14:50 +0100
  Re: [PATCH 0/2] Fixes for dell-wmi Pali Rohár <pali.rohar@gmail.com> - 2015-12-27 14:10 +0100
    Re: [PATCH 0/2] Fixes for dell-wmi Pali Rohár <pali.rohar@gmail.com> - 2015-12-27 14:20 +0100
    Re: [PATCH 0/2] Fixes for dell-wmi Gabriele Mazzotta <gabriele.mzt@gmail.com> - 2015-12-27 14:20 +0100
  Re: [PATCH 0/2] Fixes for dell-wmi Gabriele Mazzotta <gabriele.mzt@gmail.com> - 2015-12-27 14:10 +0100
  Re: [PATCH 0/2] Fixes for dell-wmi Michał Kępień <kernel@kempniu.pl> - 2015-12-28 14:40 +0100
    Re: [PATCH 0/2] Fixes for dell-wmi Pali Rohár <pali.rohar@gmail.com> - 2015-12-28 14:50 +0100
      Re: [PATCH 0/2] Fixes for dell-wmi Michał Kępień <kernel@kempniu.pl> - 2015-12-29 13:20 +0100

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