Postpone installation of the periodic sensor task until at least one

device has connected.

diff --git a/sys/dev/usb/uhidpp.c b/sys/dev/usb/uhidpp.c
index 12bf3da..28522c5 100644 (file)
--- a/sys/dev/usb/uhidpp.c
+++ b/sys/dev/usb/uhidpp.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: uhidpp.c,v 1.9 2021/02/14 14:40:38 anton Exp $        */
+/*     $OpenBSD: uhidpp.c,v 1.10 2021/02/14 14:41:35 anton Exp $       */
 
 /*
  * Copyright (c) 2021 Anton Lindqvist <anton@openbsd.org>
@@ -398,7 +398,6 @@ uhidpp_attach(struct device *parent, struct device *self, void *aux)
        strlcpy(sc->sc_sensdev.xname, sc->sc_hdev.sc_dev.dv_xname,
            sizeof(sc->sc_sensdev.xname));
        sensordev_install(&sc->sc_sensdev);
-       sc->sc_senstsk = sensor_task_register(sc, uhidpp_refresh, 6);
 
 out:
        mtx_leave(&sc->sc_mtx);
@@ -622,6 +621,9 @@ uhidpp_device_connect(struct uhidpp_softc *sc, struct uhidpp_device *dev)
        sens->value = dev->d_battery.b_nlevels;
        sensor_attach(&sc->sc_sensdev, sens);
 
+       if (sc->sc_senstsk == NULL)
+               sc->sc_senstsk = sensor_task_register(sc, uhidpp_refresh, 6);
+
        dev->d_connected = 1;
        uhidpp_device_refresh(sc, dev);
 }