serial: imx: also update RX stats in DMA path

lynxeye-dev · gregkh · commit abc7882aacdb · 2015-10-04T18:44:29.000+01:00
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 &lt;l.stach@pengutronix.de&gt;
Acked-by: Jiada Wang &lt;jiada_wang@mentor.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
diff --git 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;
 	}
 
 	/*

Original file line number	Diff line number	Diff line change
`@@ -918,6 +918,7 @@ static void dma_rx_callback(void *data)`
`918`	`918`	`sport->port.icount.buf_overrun++;`
`919`	`919`	`}`
`920`	`920`	`tty_flip_buffer_push(port);`
	`921`	`+ sport->port.icount.rx += count;`
`921`	`922`	`}`
`922`	`923`
`923`	`924`	`/*`