diff options
| -rw-r--r-- | drivers/tty/serial/imx.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index c07d9bb39695..708ba899258d 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1303,6 +1303,16 @@ static void imx_shutdown(struct uart_port *port) clk_disable_unprepare(sport->clk_ipg); } +static void imx_flush_buffer(struct uart_port *port) +{ + struct imx_port *sport = (struct imx_port *)port; + + if (sport->dma_is_enabled) { + sport->tx_bytes = 0; + dmaengine_terminate_all(sport->dma_chan_tx); + } +} + static void imx_set_termios(struct uart_port *port, struct ktermios *termios, struct ktermios *old) @@ -1623,6 +1633,7 @@ static struct uart_ops imx_pops = { .break_ctl = imx_break_ctl, .startup = imx_startup, .shutdown = imx_shutdown, + .flush_buffer = imx_flush_buffer, .set_termios = imx_set_termios, .type = imx_type, .release_port = imx_release_port, |