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Commit b6a3e147 authored by Zhang Rui's avatar Zhang Rui Committed by Rafael J. Wysocki
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Revert "ACPI / EC: Remove old CLEAR_ON_RESUME quirk"

On some Samsung hardware, it is necessary to clear events accumulated by
the EC during sleep. These ECs stop reporting GPEs until they are manually
polled, if too many events are accumulated.
Thus the CLEAR_ON_RESUME quirk is introduced to send EC query commands
unconditionally after resume to clear all the EC query events on those
platforms.

Later, commit 4c237371 ("ACPI / EC: Remove old CLEAR_ON_RESUME quirk")
removes the CLEAR_ON_RESUME quirk because we thought the new EC IRQ
polling logic should handle this case.

Now it has been proved that the EC IRQ Polling logic does not fix the
issue actually because we got regression report on these Samsung
platforms after removing the quirk.

Thus revert commit 4c237371 ("ACPI / EC: Remove old CLEAR_ON_RESUME
quirk") to introduce back the Samsung quirk in this patch.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=44161


Tested-by: default avatarOrtwin Glück <odi@odi.ch>
Tested-by: default avatarFrancisco Cribari <cribari@gmail.com>
Tested-by: default avatarBalazs Varga <balazs4web@gmail.com>
Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 116f2b34
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