diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/imx.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index d097169e85d1..ab958a59cae9 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1141,12 +1141,20 @@ static int imx_startup(struct uart_port *port) while (!(readl(sport->port.membase + UCR2) & UCR2_SRST) && (--i > 0)) udelay(1); + /* Can we enable the DMA support? */ + if (is_imx6q_uart(sport) && !uart_console(port) && + !sport->dma_is_inited) + imx_uart_dma_init(sport); + spin_lock_irqsave(&sport->port.lock, flags); /* * Finally, clear and enable interrupts */ writel(USR1_RTSD, sport->port.membase + USR1); + if (sport->dma_is_inited && !sport->dma_is_enabled) + imx_enable_dma(sport); + temp = readl(sport->port.membase + UCR1); temp |= UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN; @@ -1326,11 +1334,6 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios, if (sport->have_rtscts) { ucr2 &= ~UCR2_IRTS; ucr2 |= UCR2_CTSC; - - /* Can we enable the DMA support? */ - if (is_imx6q_uart(sport) && !uart_console(port) - && !sport->dma_is_inited) - imx_uart_dma_init(sport); } else { termios->c_cflag &= ~CRTSCTS; } @@ -1452,8 +1455,6 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios, if (UART_ENABLE_MS(&sport->port, termios->c_cflag)) imx_enable_ms(&sport->port); - if (sport->dma_is_inited && !sport->dma_is_enabled) - imx_enable_dma(sport); spin_unlock_irqrestore(&sport->port.lock, flags); } |