From: Rafael J. Wysocki <[email protected]> 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 <[email protected]> --- 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); }
