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ACPICA: Enable sleep button on ACPI legacy wake 

ACPICA commit 9383f5b01091e432c05f802a57edc20d329eec1f

Hibernation (S4) is triggered in a guest when it recieves a sleep
trigger from the hypervisor. When the guest resumes from this power
state, it does not see the sleep_enabled bit. In otherwords, the sleep
button is not enabled on waking from an S4 state. This causes
subsequent invocation of sleep state to fail in the guest.

Fix this problem by enabling the sleep button in ACPI legacy wake.

Signed-off-by: Anchal Agarwal <anchalag@amazon.com>
Reviewed-by: Balbir Singh <sblbir@amazon.com>
Reviewed-by: Frank van der Linden <fllinden@amazon.com>
[ ek: changelog]

Link: https://github.com/acpica/acpica/commit/9383f5b0
Signed-off-by: Erik Kaneda <erik.kaneda@intel.com>
Signed-off-by: Anchal Agarwal <anchalag@amazon.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Anchal Agarwal 2020-02-14 10:47:58 -08:00 committed by Rafael J. Wysocki
parent 4444b17852
commit a1dc35b840
1 changed files with 12 additions and 0 deletions
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12
drivers/acpi/acpica/hwsleep.c
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@ -300,6 +300,18 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state)
[ACPI_EVENT_POWER_BUTTON].
status_register_id, ACPI_CLEAR_STATUS);
/* Enable sleep button */
(void)
acpi_write_bit_register(acpi_gbl_fixed_event_info
[ACPI_EVENT_SLEEP_BUTTON].
enable_register_id, ACPI_ENABLE_EVENT);
(void)
acpi_write_bit_register(acpi_gbl_fixed_event_info
[ACPI_EVENT_SLEEP_BUTTON].
status_register_id, ACPI_CLEAR_STATUS);
acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING);
return_ACPI_STATUS(status);
}