Add an informational debugging printf of the maximum time spent in

EcEventWait().  If you get AE_HARDWARE_NO_RESPONSE errors, please enable
this info by setting hw.acpi.verbose=1 in loader.conf.

1 files changed, 10 insertions, 0 deletions

diff --git a/sys/dev/acpica/acpi_ec.c b/sys/dev/acpica/acpi_ec.c
index c09fb0b..e6ce1bc 100644
--- a/sys/dev/acpica/acpi_ec.c
+++ b/sys/dev/acpica/acpi_ec.c
@@ -754,6 +754,7 @@ EcWaitEvent(struct acpi_ec_softc *sc, EC_EVENT Event)
     EC_STATUS	EcStatus;
     ACPI_STATUS	Status;
     int		i, period, retval;
+    static int	EcDbgMaxDelay;
 
     mtx_assert(&sc->ec_mtx, MA_OWNED);
     Status = AE_NO_HARDWARE_RESPONSE;
@@ -810,6 +811,15 @@ EcWaitEvent(struct acpi_ec_softc *sc, EC_EVENT Event)
 	}
     }
 
+    /* Calculate new delay and print it if it exceeds the max. */
+    if (period == 1000)
+	period += i * 10000;
+    if (period > EcDbgMaxDelay) {
+	EcDbgMaxDelay = period;
+	ACPI_VPRINT(sc->ec_dev, acpi_device_get_parent_softc(sc->ec_dev),
+		    "info: new max delay is %d us\n", period);
+    }
+
     return (Status);
 }