ACPI: PM: s2idle: Print type of wakeup debug messages

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@intel.com>

diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index fd9d4e8..31c9d0c 100644 (file)
--- a/drivers/acpi/sleep.c
+++ b/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);
        }