From: Lucas Stach <l.stach@pengutronix.de>
Date: Fri, 4 Sep 2015 15:52:43 +0000 (+0200)
Subject: serial: imx: also update RX stats in DMA path
X-Git-Tag: v4.4-rc1~126^2~62
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=abc7882aacdb4b0e110026bff9b52fb783f4ebd8;p=linux-2.6-block.git

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 dcbfa5e1fb34..8b494657eeef 100644
--- 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;
 	}
 
 	/*