--- src/hardware/sysclk-lwla/api.c.orig	2020-04-23 08:18:03.312803178 -0700
+++ src/hardware/sysclk-lwla/api.c	2020-04-23 08:19:41.039466577 -0700
@@ -299,13 +299,15 @@
 		return SR_ERR_BUG;
 	}
 
-	/* Download of the shutdown bitstream, if any. */
-	ret = (*devc->model->apply_fpga_config)(sdi);
-	if (ret != SR_OK)
-		sr_warn("Unable to shut down device.");
-
-	if (usb->devhdl)
+	if (usb->devhdl) {
+		/* Download of the shutdown bitstream, if any. */
+		ret = (*devc->model->apply_fpga_config)(sdi);
+		if (ret != SR_OK)
+			sr_warn("Unable to shut down device.");
 		libusb_release_interface(usb->devhdl, USB_INTERFACE);
+	} else {
+		sr_warn("Unable to shut down device, no usb handle.");
+	}
 
 	sr_usb_close(usb);