Update hw.power whenever we refresh the AC state. This makes sure the state

doesn't get out of sync with what apm(8) reports if power is plugged or
unplugged when a machine is suspended.  Which in turn makes sure the machine
properly goes into a low CPU P-state when requested.

ok deraadt@, florian@

diff --git a/sys/dev/acpi/acpiac.c b/sys/dev/acpi/acpiac.c
index acd9322..12e80b0 100644 (file)
--- a/sys/dev/acpi/acpiac.c
+++ b/sys/dev/acpi/acpiac.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: acpiac.c,v 1.34 2021/10/30 23:24:47 deraadt Exp $ */
+/* $OpenBSD: acpiac.c,v 1.35 2022/03/21 13:38:34 kettenis Exp $ */
 /*
  * Copyright (c) 2005 Marco Peereboom <marco@openbsd.org>
  *
@@ -118,9 +118,11 @@ void
 acpiac_refresh(void *arg)
 {
        struct acpiac_softc *sc = arg;
+       extern int hw_power;
 
        acpiac_getpsr(sc);
        sc->sc_sens[0].value = sc->sc_ac_stat;
+       hw_power = (sc->sc_ac_stat == PSR_ONLINE);
 }
 
 int
@@ -142,7 +144,6 @@ int
 acpiac_notify(struct aml_node *node, int notify_type, void *arg)
 {
        struct acpiac_softc *sc = arg;
-       extern int hw_power;
 
        dnprintf(10, "acpiac_notify: %.2x %s\n", notify_type,
            DEVNAME(sc));
@@ -162,6 +163,5 @@ acpiac_notify(struct aml_node *node, int notify_type, void *arg)
                dnprintf(10, "A/C status: %d\n", sc->sc_ac_stat);
                break;
        }
-       hw_power = (sc->sc_ac_stat == PSR_ONLINE);
        return (0);
 }