serial: imx: also update RX stats in DMA path

The RX bytecount was only updated in the PIO path and thus
the device erroneously reported a value of 0 if DMA is in
use.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index dcbfa5e1fb341dc36b63bff385d14b54f5e62968..8b494657eeefa01f07e58e5b996da8f9db0e8c2c 100644 (file)
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -918,6 +918,7 @@ static void dma_rx_callback(void *data)
                                sport->port.icount.buf_overrun++;
                }
                tty_flip_buffer_push(port);
+               sport->port.icount.rx += count;
        }
 
        /*