[PATCH 3/7] serial: imx: init dma_is_{rx|tx}ing variables

[Romain Perier]

From: Nandor Han <nandor.han@xxxxxx>

Initialize both dma_is_{rx|tx}ing variables when DMA is enabled to avoid
checking uninitialized variables if port shutdown is requested before
DMA channels get a chance to start.

Signed-off-by: Nandor Han <nandor.han@xxxxxx>
Signed-off-by: Romain Perier <romain.perier@xxxxxxxxxxxxx>
---
 drivers/tty/serial/imx.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 188063d..81fb413 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1225,6 +1225,9 @@ static void imx_enable_dma(struct imx_port *sport)
 
 	imx_setup_ufcr(sport, TXTL_DMA, RXTL_DMA);
 
+	sport->dma_is_rxing = 0;
+	sport->dma_is_txing = 0;
+
 	sport->dma_is_enabled = 1;
 }
 
-- 
1.8.3.1