LIBUSB_LOG_LEVEL_DEBUG
DPRINTF(dev->ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_submit_transfer enter");
DPRINTF(dev->ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_submit_transfer leave %d", err);
DPRINTF(dev->ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_cancel_transfer enter");
DPRINTF(dev->ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_cancel_transfer leave");
[LIBUSB_LOG_LEVEL_DEBUG] = "LIBUSB_DEBUG",
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_open_device_with_vid_pid enter");
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_open_device_with_vid_pid leave");
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb10_handle_events_sub enter");
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb10_handle_events_sub complete");
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_wait_for_event enter");
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_handle_events_timeout_completed enter");
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_handle_events_timeout_completed exit");
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "sync I/O done");
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_bulk_transfer enter");
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_bulk_transfer leave");
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_interrupt_transfer enter");
DPRINTF(ctx, LIBUSB_LOG_LEVEL_DEBUG, "libusb_interrupt_transfer leave");