struct dma_tx_state state;
int count;
unsigned long flags;
+ int ret;
dma_sync_single_for_cpu(dma->rxchan->device->dev, dma->rx_addr,
dma->rx_size, DMA_FROM_DEVICE);
count = dma->rx_size - state.residue;
- tty_insert_flip_string(tty_port, dma->rx_buf, count);
- p->port.icount.rx += count;
+ ret = tty_insert_flip_string(tty_port, dma->rx_buf, count);
+
+ p->port.icount.rx += ret;
+ p->port.icount.buf_overrun += count - ret;
unlock:
spin_unlock_irqrestore(&priv->rx_dma_lock, flags);