[Bug 221905] New: [REGRESSION] apple-properties: device path parse error -19 at 0x14 on iMac14,3

[Bug 221905] New: [REGRESSION] apple-properties: device path parse error -19 at 0x14 on iMac14,3

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=221905

            Bug ID: 221905
           Summary: [REGRESSION] apple-properties: device path parse error
                    -19 at 0x14 on iMac14,3
           Product: Drivers
           Version: 2.5
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Platform_x86
          Assignee: drivers_platform_x86@kernel-bugs.osdl.org
          Reporter: ch3fdan@gmail.com
        Regression: No

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[Bug 221905] [REGRESSION] apple-properties: device path parse error -19 at 0x14 on iMac14,3

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=221905

--- Comment #1 from ch3fdan (ch3fdan@gmail.com) ---
Created attachment 310706
  --> https://bugzilla.kernel.org/attachment.cgi?id=310706&action=edit
hardwareSummary, dmesgFailedBoot.log

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[Bug 221905] [REGRESSION] apple-properties: device path parse error -19 at 0x14 on iMac14,3

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=221905

Lukas Wunner (lukas@wunner.de) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lukas@wunner.de

--- Comment #2 from Lukas Wunner (lukas@wunner.de) ---
The EFI firmware has passed device properties for an integrated (Intel) GPU at
0000:00:02.0, however that device is not visible to the operating system as the
EFI firmware has switched it off in favor of the discrete AMD GPU.

The EFI firmware shouldn't have passed device properties for the invisble iGPU,
but we have no leverage to make Apple change that.

So the error message is harmless and can be ignored. We could probably demote
it to KERN_INFO severity if it is perceived as annoying.

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[Bug 221905] [REGRESSION] apple-properties: device path parse error -19 at 0x14 on iMac14,3

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=221905

Artem S. Tashkinov (aros@gmx.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |ANSWERED

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[Bug 221905] [REGRESSION] apple-properties: device path parse error -19 at 0x14 on iMac14,3

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=221905

--- Comment #3 from Lukas Wunner (lukas@wunner.de) ---
Created attachment 310721
  --> https://bugzilla.kernel.org/attachment.cgi?id=310721&action=edit
[PATCH] efi/apple-properties: Silence errors caused by disabled iGPU

Could you test this patch please and report back whether it fixes the issue for
you?

With the patch, you should see only a single line with KERN_INFO severity:

  apple-properties: ignoring 2 device properties of disabled iGPU

... instead of a splat with multiple KERN_ERR messages.

Thanks!

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