diff options
Diffstat (limited to 'drivers/tty/serial/imx.c')
| -rw-r--r-- | drivers/tty/serial/imx.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 73158d96822a..0e64f18f8c42 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -495,6 +495,7 @@ static inline void imx_transmit_buffer(struct imx_port *sport) imx_stop_tx(&sport->port); } +static void imx_dma_tx(struct imx_port *sport); static void dma_tx_callback(void *data) { struct imx_port *sport = data; @@ -524,6 +525,11 @@ static void dma_tx_callback(void *data) dev_dbg(sport->port.dev, "exit in %s.\n", __func__); return; } + + spin_lock_irqsave(&sport->port.lock, flags); + if (!uart_circ_empty(xmit) && !uart_tx_stopped(&sport->port)) + imx_dma_tx(sport); + spin_unlock_irqrestore(&sport->port.lock, flags); } static void imx_dma_tx(struct imx_port *sport) |