X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fsysclk-lwla%2Fapi.c;fp=src%2Fhardware%2Fsysclk-lwla%2Fapi.c;h=c6be15edbb952500fe882a618009907bf49437c4;hb=6c1a4cb44ccd24b2b23477c86273a8e405758c03;hp=93e54895e08ffd8352e7342f772e552fecd3df4d;hpb=56c8dd821e7d8ab3602e5fd001f56d91d7b42df3;p=libsigrok.git

diff --git a/src/hardware/sysclk-lwla/api.c b/src/hardware/sysclk-lwla/api.c
index 93e54895..c6be15ed 100644
--- a/src/hardware/sysclk-lwla/api.c
+++ b/src/hardware/sysclk-lwla/api.c
@@ -301,7 +301,8 @@ static int dev_close(struct sr_dev_inst *sdi)
 	if (ret != SR_OK)
 		sr_warn("Unable to shut down device.");
 
-	libusb_release_interface(usb->devhdl, USB_INTERFACE);
+	if (usb->devhdl)
+		libusb_release_interface(usb->devhdl, USB_INTERFACE);
 
 	sr_usb_close(usb);