powersupply_sispm: import sispm and usb modules on first use
Change-Id: I6045bb739e5c69972014a9d27be3a24b7ad61c9a
diff --git a/src/osmo_gsm_tester/obj/powersupply_sispm.py b/src/osmo_gsm_tester/obj/powersupply_sispm.py
index d1b244f..0b1ad07 100644
--- a/src/osmo_gsm_tester/obj/powersupply_sispm.py
+++ b/src/osmo_gsm_tester/obj/powersupply_sispm.py
@@ -17,9 +17,6 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
-import sispm
-from usb.core import USBError
-
from ..core import log
from ..core.event_loop import MainLoop
from .powersupply import PowerSupply
@@ -77,6 +74,10 @@
########################
def __init__(self, conf):
super().__init__(conf, 'sispm')
+
+ import sispm
+ from usb.core import USBError
+
mydevid = conf.get('device')
if mydevid is None:
raise log.Error('No "device" attribute provided in supply conf!')