From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Since acpi_s2idle_wake() knows the category of wakeup causing the
system to resume from suspend-to-idle, make it print a unique message
for each of them to help diagnose wakeup issues.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
The patch is on top of the linux-next branch in linux-pm.git.
---
drivers/acpi/sleep.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
Index: linux-pm/drivers/acpi/sleep.c
===================================================================
--- linux-pm.orig/drivers/acpi/sleep.c
+++ linux-pm/drivers/acpi/sleep.c
@@ -992,23 +992,31 @@ static bool acpi_s2idle_wake(void)
* wakeup is pending anyway and the SCI is not the source of
* it).
*/
- if (irqd_is_wakeup_armed(irq_get_irq_data(acpi_sci_irq)))
+ if (irqd_is_wakeup_armed(irq_get_irq_data(acpi_sci_irq))) {
+ pm_pr_dbg("Wakeup unrelated to ACPI SCI\n");
return true;
+ }
/*
* If the status bit of any enabled fixed event is set, the
* wakeup is regarded as valid.
*/
- if (acpi_any_fixed_event_status_set())
+ if (acpi_any_fixed_event_status_set()) {
+ pm_pr_dbg("ACPI fixed event wakeup\n");
return true;
+ }
/* Check wakeups from drivers sharing the SCI. */
- if (acpi_check_wakeup_handlers())
+ if (acpi_check_wakeup_handlers()) {
+ pm_pr_dbg("ACPI custom handler wakeup\n");
return true;
+ }
/* Check non-EC GPE wakeups and dispatch the EC GPE. */
- if (acpi_ec_dispatch_gpe())
+ if (acpi_ec_dispatch_gpe()) {
+ pm_pr_dbg("ACPI non-EC GPE wakeup\n");
return true;
+ }
/*
* Cancel the SCI wakeup and process all pending events in case
@@ -1027,8 +1035,10 @@ static bool acpi_s2idle_wake(void)
* are pending here, they must be resulting from the processing
* of EC events above or coming from somewhere else.
*/
- if (pm_wakeup_pending())
+ if (pm_wakeup_pending()) {
+ pm_pr_dbg("Wakeup after ACPI Notify sync\n");
return true;
+ }
rearm_wake_irq(acpi_sci_irq);
}
