diff options
| author | Fugang Duan <fugang.duan@nxp.com> | 2019-11-13 17:56:26 +0800 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@nxp.com> | 2019-11-25 15:45:27 +0800 |
| commit | 11a8351e802315c1de223d40ef8ea21574b0a769 (patch) | |
| tree | 6ad61a73f1254fb925c0f02e67c91ba9b494b784 /drivers/tty/serial/imx.c | |
| parent | 7e33590f8be58238cc9bff5af71fcd692af8213b (diff) | |
MLK-22971 serial: imx: disable UCR4_OREN in .stop_rx()
Disable UCR4_OREN bit in .stop_rx() to avoid endless
interrupt happen while tty port is shuting down.
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Diffstat (limited to 'drivers/tty/serial/imx.c')
| -rw-r--r-- | drivers/tty/serial/imx.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index c37f939b2b23..567079a40bb7 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -469,18 +469,21 @@ static void imx_uart_stop_tx(struct uart_port *port) static void imx_uart_stop_rx(struct uart_port *port) { struct imx_port *sport = (struct imx_port *)port; - u32 ucr1, ucr2; + u32 ucr1, ucr2, ucr4; ucr1 = imx_uart_readl(sport, UCR1); ucr2 = imx_uart_readl(sport, UCR2); + ucr4 = imx_uart_readl(sport, UCR4); if (sport->dma_is_enabled) { ucr1 &= ~(UCR1_RXDMAEN | UCR1_ATDMAEN); } else { ucr1 &= ~UCR1_RRDYEN; ucr2 &= ~UCR2_ATEN; + ucr4 &= ~UCR4_OREN; } imx_uart_writel(sport, ucr1, UCR1); + imx_uart_writel(sport, ucr4, UCR4); ucr2 &= ~UCR2_RXEN; imx_uart_writel(sport, ucr2, UCR2); |