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Message-id: <596b9c4a-fb83-a8ab-3a44-6052d83fa546@augustwikerfors.se>
Date:   Thu, 27 Jul 2023 00:54:03 +0200
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From:   August Wikerfors <git@augustwikerfors.se>
Subject: [REGRESSION] IRQ override revert breaks keyboard on Lenovo Yoga 7
 14ARB7
To:     Mario Limonciello <mario.limonciello@amd.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>
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        regressions@lists.linux.dev
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Hi,

Since v6.5-rc1 the keyboard on this laptop no longer works. This problem
also existed before v6.0-rc1 commit 9946e39fe8d0 ("ACPI: resource: skip
IRQ override on AMD Zen platforms"), so I suspected the cause to be
a9c4a912b7dc ("ACPI: resource: Remove "Zen" specific match and quirks")
which reverted that commit. Reverting a9c4a912b7dc confirmed this theory.

#regzbot introduced: a9c4a912b7dc

My specs are:
Laptop model: Lenovo Yoga 7 14ARB7
BIOS: K5CN40WWT66 (latest beta from [1])
CPU: AMD Ryzen 5 6600U
Kernel config: [2]
Distribution: Arch Linux

The issue has been confirmed by at least one other user with this
laptop: [3]

[1] https://forums.lenovo.com/t5/Lenovo-Yoga-Series-Laptops/Yoga-7-14ARB7-keyboard-lag-when-on-certain-websites-or-when-Vantage-is-opened/m-p/5174991?page=28#5974742
[2] https://gitlab.archlinux.org/archlinux/packaging/packages/linux/-/raw/d4a56a1e994201b6c607199922aa22e4337b56c9/config
[3] https://github.com/tomsom/yoga-linux/issues/47

Regards,
August Wikerfors