X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fvictor-dmm%2Fapi.c;h=46e8c1d5b35c61124b5dd42b03bbf334928f3c44;hb=d4928d7102c6b2f9f7aa51a1b98669bf148fff80;hp=a389b0794799932f62ee0aeb803ff286b603faa0;hpb=851d5b2274f138d58be42adbbe584d9a4c4dfe01;p=libsigrok.git

diff --git a/hardware/victor-dmm/api.c b/hardware/victor-dmm/api.c
index a389b079..46e8c1d5 100644
--- a/hardware/victor-dmm/api.c
+++ b/hardware/victor-dmm/api.c
@@ -194,8 +194,9 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
 	/* The device reports as HID class, so the kernel would have
 	 * claimed it. */
 	if (libusb_kernel_driver_active(devc->usb->devhdl, 0) == 1) {
-		if (libusb_detach_kernel_driver(devc->usb->devhdl, 0) < 0) {
-			sr_err("Failed to detach kernel driver.");
+		if ((ret = libusb_detach_kernel_driver(devc->usb->devhdl, 0)) < 0) {
+			sr_err("Failed to detach kernel driver: %s.",
+			       libusb_error_name(ret));
 			return SR_ERR;
 		}
 	}