int Context::flush(int mask)
{
- int ret = 1;
+ int ret;
- if (mask & Input)
- ret &= ftdi_usb_purge_rx_buffer(d->ftdi);
- if (mask & Output)
- ret &= ftdi_usb_purge_tx_buffer(d->ftdi);
+ switch (mask & (Input | Output)) {
+ case Input:
+ ret = ftdi_usb_purge_rx_buffer(d->ftdi);
+ break;
+
+ case Output:
+ ret = ftdi_usb_purge_tx_buffer(d->ftdi);
+ break;
+
+ case Input | Output:
+ ret = ftdi_usb_purge_buffers(d->ftdi);
+ break;
+
+ default:
+ // Emulate behavior of previous version.
+ ret = 1;
+ break;
+ }
return ret;
}