From: Uwe Hermann <redacted>
Date: Sun, 24 Dec 2017 14:24:35 +0000 (+0100)
Subject: sysclk-lwla: Fix a segfault in dev_close().
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=6c1a4cb44ccd24b2b23477c86273a8e405758c03;p=libsigrok.git

sysclk-lwla: Fix a segfault in dev_close().
---

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);