diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/fsl_lpuart.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 04fecff2fa5f..eac5243a9db0 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1702,6 +1702,16 @@ static int lpuart_startup(struct uart_port *port) return 0; } +static void lpuart32_hw_disable(struct lpuart_port *sport) +{ + unsigned long temp; + + temp = lpuart32_read(&sport->port, UARTCTRL); + temp &= ~(UARTCTRL_RIE | UARTCTRL_ILIE | UARTCTRL_RE | + UARTCTRL_TIE | UARTCTRL_TE); + lpuart32_write(&sport->port, temp, UARTCTRL); +} + static void lpuart32_configure(struct lpuart_port *sport) { unsigned long temp; @@ -1726,11 +1736,12 @@ static void lpuart32_hw_setup(struct lpuart_port *sport) spin_lock_irqsave(&sport->port.lock, flags); - lpuart32_setup_watermark_enable(sport); + lpuart32_hw_disable(sport); lpuart_rx_dma_startup(sport); lpuart_tx_dma_startup(sport); + lpuart32_setup_watermark_enable(sport); lpuart32_configure(sport); spin_unlock_irqrestore(&sport->port.lock, flags); |