diff --git a/components/driver/usb_serial_jtag.c b/components/driver/usb_serial_jtag.c index 3f7db5ee8f..2e4f7be0f6 100644 --- a/components/driver/usb_serial_jtag.c +++ b/components/driver/usb_serial_jtag.c @@ -171,10 +171,10 @@ int usb_serial_jtag_write_bytes(const void* src, size_t size, TickType_t ticks_t const uint8_t *buff = (const uint8_t *)src; // Blocking method, Sending data to ringbuffer, and handle the data in ISR. - xRingbufferSend(p_usb_serial_jtag_obj->tx_ring_buf, (void*) (buff), size, ticks_to_wait); + BaseType_t result = xRingbufferSend(p_usb_serial_jtag_obj->tx_ring_buf, (void*) (buff), size, ticks_to_wait); // Now trigger the ISR to read data from the ring buffer. usb_serial_jtag_ll_ena_intr_mask(USB_SERIAL_JTAG_INTR_SERIAL_IN_EMPTY); - return size; + return (result == pdFALSE) ? 0 : size; } esp_err_t usb_serial_jtag_driver_uninstall(void)