platform/x86: lg-laptop: Improve WMAB control method support

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The WMAB ACPI control method can return two kinds of results:

1. A ACPI integer containing the result.
2. A ACPI buffer containing the result and an error code.

Devices implement one of those mechanisms, but not both. Extend
lg_wmab() to abstract away the differences between both mechanisms
to fix keyboard backlight support on newer devices.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20260708195553.7762-5-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

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Armin Wolf 2026-07-08 21:55:52 +02:00 • committed by Ilpo Järvinen

parent e114aeb30e

commit 9f57244922

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drivers/platform/x86/lg-laptop.c

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