Add libusb error to debug message when connecting to a device failed

1 files changed, 4 insertions, 3 deletions

diff --git a/src/libirecovery.c b/src/libirecovery.c
index 7315001..83ceefd 100644
--- a/src/libirecovery.c
+++ b/src/libirecovery.c
@@ -758,9 +758,10 @@ irecv_error_t irecv_open_with_ecid(irecv_client_t* pclient, unsigned long long e
 
                                 debug("opening device %04x:%04x...\n", usb_descriptor.idVendor, usb_descriptor.idProduct);
 
-                                libusb_open(usb_device, &usb_handle);
-                                if (usb_handle == NULL) {
-                                        debug("%s: can't connect to device...\n", __func__);
+                                int libusb_error = libusb_open(usb_device, &usb_handle);
+                                if (usb_handle == NULL || libusb_error != 0) {
+                                        debug("%s: can't connect to device: %s\n", __func__, libusb_error_name(libusb_error));
+
                                         libusb_close(usb_handle);
                                         if (ecid != 0) {
                                                 continue;