From 5549bd2f3d5a20e125b0b2b2096b017348a74834 Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Sat, 31 Oct 2015 21:38:12 +0100
Subject: [PATCH] If libusb_submit_transfer() fails, output the actual error
 number.

---
 bmusb.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/bmusb.cpp b/bmusb.cpp
index b3739ca..c09c02d 100644
--- a/bmusb.cpp
+++ b/bmusb.cpp
@@ -638,8 +638,9 @@ void BMUSBCapture::cb_xfr(struct libusb_transfer *xfr)
 	}
 #endif
 
-	if (libusb_submit_transfer(xfr) < 0) {
-		fprintf(stderr, "error re-submitting URB\n");
+	int rc = libusb_submit_transfer(xfr);
+	if (rc < 0) {
+		fprintf(stderr, "error re-submitting URB: %s\n", libusb_error_name(rc));
 		exit(1);
 	}
 }
-- 
2.39.2