[PATCH 3/7] serial: imx: init dma_is_{rx|tx}ing variables
From: Romain Perier <hidden>
Date: 2017-06-30 12:05:35
Also in:
linux-serial, lkml
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
From: Nandor Han <redacted>
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 <redacted>
Signed-off-by: Romain Perier <redacted>
---
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