libusb1_common, ftdi: clarify libusb_open error message

[openocd] / src / jtag / drivers / mpsse.c

diff --git a/src/jtag/drivers/mpsse.c b/src/jtag/drivers/mpsse.c
index 13f61d751d5f8413d93c3337cb4227959bed3ccb..82703bf341c73d53889f554bd6affea1abcd6668 100644 (file)
--- a/src/jtag/drivers/mpsse.c
+++ b/src/jtag/drivers/mpsse.c
@@ -135,7 +135,8 @@ static bool open_matching_device(struct mpsse_ctx *ctx, const uint16_t *vid, con
 
                err = libusb_open(device, &ctx->usb_dev);
                if (err != LIBUSB_SUCCESS) {
-                       LOG_ERROR("libusb_open() failed with %d", err);
+                       LOG_ERROR("libusb_open() failed with %s",
+                                 libusb_error_name(err));
                        continue;
                }