platform/x86: quickstart: Fix race condition when reporting input event

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Since commit e2ffcda162 ("ACPI: OSL: Allow Notify () handlers to run
on all CPUs"), the ACPI core allows multiple notify calls to be active
at the same time. This means that two instances of quickstart_notify()
running at the same time can mess which each others input sequences.

Fix this by protecting the input sequence with a mutex.

Compile-tested only.

Fixes: afd66f2a739e ("platform/x86: Add ACPI quickstart button (PNP0C32) driver")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20240327214524.123935-1-W_Armin@gmx.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

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Armin Wolf 2024-03-27 22:45:24 +01:00 • committed by Hans de Goede

parent 83cfe6d8b6

commit 10eba55feb

1 changed files with 17 additions and 0 deletions

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drivers/platform/x86/quickstart.c

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