[Bug 201723] THERM_WINDTUNNEL not working any longer in kernel 4.19.x (PowerMac G4 MDD)

[Bug 201723] THERM_WINDTUNNEL not working any longer in kernel 4.19.x (PowerMac G4 MDD)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=201723

--- Comment #4 from Erhard F. (erhard_f@mailbox.org) ---
Created attachment 285535
  --> https://bugzilla.kernel.org/attachment.cgi?id=285535&action=edit
bisect.log

Final bisect commit.

It's not a bug, it's a feature. :(

# git bisect bad | tee -a ~/bisect.log
3e7bed52719de4b5b5fb900869e293eae0bc3f3e is the first bad commit
commit 3e7bed52719de4b5b5fb900869e293eae0bc3f3e
Author: Wolfram Sang <wsa@the-dreams.de>
Date:   Tue Aug 21 17:02:39 2018 +0200

    macintosh: therm_windtunnel: drop using attach_adapter

    As we now have deferred probing, we can use a custom mechanism and
    finally get rid of the legacy interface from the i2c core.

    Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
    Acked-by: Michael Ellerman <mpe@ellerman.id.au>

:040000 040000 04029fe24bce33dd0b815fa961cfa847a2abce77
2dc14e16e628b7e2fa4b65bfd6544c9c5e165a9a M      drivers

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[Bug 201723] [Bisected][Regression] THERM_WINDTUNNEL not working any longer in kernel 4.19.x (PowerMac G4 MDD)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=201723

--- Comment #5 from Wolfram Sang (wsa@the-dreams.de) ---
I contacted Erhard by email to gather some more debug output. If we make
substantial progress, I will report it here.

Sidenote: therm_windtunnel has its own ADM1030 and DS1775 handling, so it
doesn't need the seperate drivers from HWMON. In theory, it should, but I guess
noone is up to refactoring all that old code.

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[Bug 201723] [Bisected][Regression] THERM_WINDTUNNEL not working any longer in kernel 4.19.x (PowerMac G4 MDD)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=201723

Wolfram Sang (wsa@the-dreams.de) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

--- Comment #6 from Wolfram Sang (wsa@the-dreams.de) ---
Patch which works for Erhard is sent out:

http://patchwork.ozlabs.org/patch/1244322/

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[Bug 201723] [Bisected][Regression] THERM_WINDTUNNEL not working any longer in kernel 4.19.x (PowerMac G4 MDD)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=201723

Wolfram Sang (wsa@the-dreams.de) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |CODE_FIX

--- Comment #7 from Wolfram Sang (wsa@the-dreams.de) ---
Commited as 38b17afb0ebb ("macintosh: therm_windtunnel: fix regression when
instantiating devices") and available upstream since v5.6-rc4.

Thanks for everyone helping, especially Erhard, of course!

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