+ Rafael, Bob
Also, is there a reason why this wasn't CC-ed to linux-acpi mailing list? It would be good to get feedback from there too..
I think I did to all the email id's generated from get_maintainer.pl. Ccing again
+ linux-acpi
Thanks,
Erik
> -----Original Message-----
> From: Anchal Agarwal <anchalag@xxxxxxxxxx>
> Sent: Monday, October 29, 2018 10:52 AM
> Subject: [PATCH] ACPICA: Enable sleep button on ACPI legacy wake
>
> Currently we do not see sleep_enable bit set after guest resumes from
> hibernation. Hibernation is triggered in guest on receiving a sleep trigger
> from the hypervisor(S4 state). We see that power button is enabled on wake
> up from S4 state however sleep button isn't. This causes subsequent
> invocation of sleep state to fail in the guest. Any environment going through
> acpi_hw_legacy_wake() won't have sleep button enabled.
>
> Signed-off-by: Anchal Agarwal <anchalag@xxxxxxxxxx>
> Reviewed-by: Balbir Singh <sblbir@xxxxxxxxxx>
> Reviewed-by: Frank van der Linden <fllinden@xxxxxxxxxx>
> ---
> drivers/acpi/acpica/hwsleep.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
> index b62db8ec446f..a176c7802760 100644
> --- a/drivers/acpi/acpica/hwsleep.c
> +++ b/drivers/acpi/acpica/hwsleep.c
> @@ -300,6 +300,17 @@ 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);
> }
> --
> 2.15.3.AMZN
