From d53ab27c6945636a8031e1868c503adeb7dad557 Mon Sep 17 00:00:00 2001 From: "Steinar H. Gunderson" Date: Wed, 27 Jul 2016 21:19:53 +0200 Subject: [PATCH] Properly initialize libusb in num_cards(). --- bmusb.cpp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/bmusb.cpp b/bmusb.cpp index 7c21082..e9a9125 100644 --- a/bmusb.cpp +++ b/bmusb.cpp @@ -1013,6 +1013,12 @@ libusb_device_handle *open_card(unsigned card_index, libusb_device *dev, string unsigned BMUSBCapture::num_cards() { + int rc = libusb_init(nullptr); + if (rc < 0) { + fprintf(stderr, "Error initializing libusb: %s\n", libusb_error_name(rc)); + exit(1); + } + vector found_cards = find_all_cards(); unsigned ret = found_cards.size(); for (size_t i = 0; i < found_cards.size(); ++i) { -- 2.39.2