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Re: [PATCH v2 4/4] ACPI / button: Add document for ACPI control method lid device restrictions

From Bastien Nocera <hadess@hadess.net>
Newsgroups linux.kernel
Subject Re: [PATCH v2 4/4] ACPI / button: Add document for ACPI control method lid device restrictions
Date 2016-07-11 13:00 +0200
Message-ID <rTH6r-5VY-33@gated-at.bofh.it> (permalink)
References <rRwyt-24B-5@gated-at.bofh.it> <rSbLj-3Kd-1@gated-at.bofh.it> <rSbLk-3Kd-21@gated-at.bofh.it> <rSA70-2JT-1@gated-at.bofh.it> <rTA4V-1uK-7@gated-at.bofh.it>
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On Mon, 2016-07-11 at 03:20 +0000, Zheng, Lv wrote:
> 
<snip>
> > This worries me as there is no plan after "During the period the
> > userspace hasn't been switched to use the new event".
> > 
> > I really hope you'll keep sending SW_LID for reliable LID
> > platforms,
> > and not remove it entirely as you will break platforms.
> 
> [Lv Zheng] 
> We won't remove SW_LID from the kernel :).
> 
> And we haven't removed SW_LID from the acpi button driver.
> We'll just stop sending "initial lid state" from acpi button driver,
> i.e., the behavior carried out by "button.lid_init_state=ignore".
> 
> Maybe it is not sufficient, after the userspace has been changed to
> support the new event, we should stop sending SW_LID from acpi button
> driver.

For the affected devices? Sure, but I don't think that's a reasonable
thing to do for "all" the devices. We have a majority of laptops where
this isn't a problem, and it's not even a problem any more on one of
the devices that triggered this discussion (there's a patch for make
the LID status match reality for the Surface 3).

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Thread

[PATCH 0/5] ACPI: ACPI documentations and trivial fixes Lv Zheng <lv.zheng@intel.com> - 2016-07-05 13:20 +0200
  [PATCH v2 3/4] ACPI / button: Add SW_ACPI_LID for new usage model Lv Zheng <lv.zheng@intel.com> - 2016-07-07 09:20 +0200
    Re: [PATCH v2 3/4] ACPI / button: Add SW_ACPI_LID for new usage model Benjamin Tissoires <benjamin.tissoires@gmail.com> - 2016-07-08 11:30 +0200
      Re: [PATCH v2 3/4] ACPI / button: Add SW_ACPI_LID for new usage model Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2016-07-08 20:00 +0200
  [PATCH v2 0/4] ACPI: ACPI documentation Lv Zheng <lv.zheng@intel.com> - 2016-07-07 09:20 +0200
    [PATCH v2 1/4] ACPI: Add documentation describing ACPICA release automation Lv Zheng <lv.zheng@intel.com> - 2016-07-07 09:20 +0200
    [PATCH v2 4/4] ACPI / button: Add document for ACPI control method lid device restrictions Lv Zheng <lv.zheng@intel.com> - 2016-07-07 09:20 +0200
      Re: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions Benjamin Tissoires <benjamin.tissoires@gmail.com> - 2016-07-08 11:20 +0200
        Re: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2016-07-08 20:00 +0200
          Re: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions Benjamin Tissoires <benjamin.tissoires@gmail.com> - 2016-07-11 13:40 +0200
            Re: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2016-07-12 02:50 +0200
              RE: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions "Zheng, Lv" <lv.zheng@intel.com> - 2016-07-12 09:50 +0200
              RE: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions "Zheng, Lv" <lv.zheng@intel.com> - 2016-07-20 05:30 +0200
            RE: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions "Zheng, Lv" <lv.zheng@intel.com> - 2016-07-12 09:20 +0200
          RE: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions "Zheng, Lv" <lv.zheng@intel.com> - 2016-07-19 09:20 +0200
            Re: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions Benjamin Tissoires <benjamin.tissoires@gmail.com> - 2016-07-19 10:50 +0200
              RE: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions "Zheng, Lv" <lv.zheng@intel.com> - 2016-07-19 11:00 +0200
                Re: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions Benjamin Tissoires <benjamin.tissoires@gmail.com> - 2016-07-19 11:10 +0200
        RE: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions "Zheng, Lv" <lv.zheng@intel.com> - 2016-07-11 05:30 +0200
          Re: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions Bastien Nocera <hadess@hadess.net> - 2016-07-11 13:00 +0200
            RE: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions "Zheng, Lv" <lv.zheng@intel.com> - 2016-07-12 09:10 +0200
          Re: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions Benjamin Tissoires <benjamin.tissoires@gmail.com> - 2016-07-11 13:50 +0200
            RE: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions "Zheng, Lv" <lv.zheng@intel.com> - 2016-07-12 09:40 +0200
          Re: [PATCH v2 4/4] ACPI / button: Add document for ACPI control  method lid device restrictions Benjamin Tissoires <benjamin.tissoires@gmail.com> - 2016-07-11 13:50 +0200
    [PATCH v2 2/4] ACPI / debugger: Add AML debugger documentation Lv Zheng <lv.zheng@intel.com> - 2016-07-07 09:20 +0200
  [PATCH v3 2/2] ACPI / button: Add document for ACPI control method lid device restrictions Lv Zheng <lv.zheng@intel.com> - 2016-07-12 12:20 +0200
  [PATCH v3 1/2] ACPI / button: Add KEY_LID_CLOSE for new usage model Lv Zheng <lv.zheng@intel.com> - 2016-07-12 12:20 +0200
    Re: [PATCH v3 1/2] ACPI / button: Add KEY_LID_CLOSE for new usage model Benjamin Tissoires <benjamin.tissoires@gmail.com> - 2016-07-18 10:00 +0200
      Re: [PATCH v3 1/2] ACPI / button: Add KEY_LID_CLOSE for new usage  model Bastien Nocera <hadess@hadess.net> - 2016-07-18 18:00 +0200
      RE: [PATCH v3 1/2] ACPI / button: Add KEY_LID_CLOSE for new usage  model "Zheng, Lv" <lv.zheng@intel.com> - 2016-07-19 06:50 +0200

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