diff options
Diffstat (limited to 'drivers/tty')
| -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 d879a9b86424..dfeff3951f93 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -457,7 +457,10 @@ static inline void imx_transmit_buffer(struct imx_port *sport) } } - while (!uart_circ_empty(xmit) && !sport->dma_is_txing && + if (sport->dma_is_txing) + return; + + while (!uart_circ_empty(xmit) && !(readl(sport->port.membase + uts_reg(sport)) & UTS_TXFULL)) { /* send xmit->buf[xmit->tail] * out the port here */ |