Re: [REGRESSION 4.17] Spurious wakeup / reboot with power button

Rafael J. Wysocki
2018-07-06T12:13:04Z

On Friday, July 6, 2018 1:21:50 PM CEST Rafael J. Wysocki wrote:
> On Fri, Jul 6, 2018 at 1:12 PM, Thomas Hänig <haenig@cosifan.de> wrote:

[cut]

> So the latest patch:
>
> https://patchwork.kernel.org/patch/10511211/
>
> should work for you (please verify) and the change in
> drivers/acpi/sleep.c in it most likely is not necessary.
>
> If you can confirm that this one works for you, I'll send a smaller
> one with the acpi_hw_legacy_sleep() part alone.

Well, scratch this, sorry.

The power button probably is a fixed event and it won't be effected by
that patch.

Instead, please test the patch below.

---
drivers/acpi/acpica/hwsleep.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)

Index: linux-pm/drivers/acpi/acpica/hwsleep.c
===================================================================
--- linux-pm.orig/drivers/acpi/acpica/hwsleep.c
+++ linux-pm/drivers/acpi/acpica/hwsleep.c
@@ -51,16 +51,23 @@ acpi_status acpi_hw_legacy_sleep(u8 slee
return_ACPI_STATUS(status);
}

- /*
- * 1) Disable all GPEs
- * 2) Enable all wakeup GPEs
- */
+ /* Disable all GPEs */
status = acpi_hw_disable_all_gpes();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
+ /*
+ * If the target sleep state is S5, clear all GPEs and fixed events too
+ */
+ if (sleep_state == ACPI_STATE_S5) {
+ status = acpi_hw_clear_acpi_status();
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+ }
acpi_gbl_system_awake_and_running = FALSE;

+ /* Enable all wakeup GPEs */
status = acpi_hw_enable_all_wakeup_gpes();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);