diff options
Diffstat (limited to 'drivers/serial/atmel_serial.c')
| -rw-r--r-- | drivers/serial/atmel_serial.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c index 6aeef22bd20..1fee12c1f4f 100644 --- a/drivers/serial/atmel_serial.c +++ b/drivers/serial/atmel_serial.c @@ -662,14 +662,14 @@ static void atmel_rx_from_ring(struct uart_port *port) * uart_start(), which takes the lock. */ spin_unlock(&port->lock); - tty_flip_buffer_push(port->info->tty); + tty_flip_buffer_push(port->info->port.tty); spin_lock(&port->lock); } static void atmel_rx_from_dma(struct uart_port *port) { struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); - struct tty_struct *tty = port->info->tty; + struct tty_struct *tty = port->info->port.tty; struct atmel_dma_buffer *pdc; int rx_idx = atmel_port->pdc_rx_idx; unsigned int head; @@ -794,7 +794,7 @@ static void atmel_tasklet_func(unsigned long data) static int atmel_startup(struct uart_port *port) { struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); - struct tty_struct *tty = port->info->tty; + struct tty_struct *tty = port->info->port.tty; int retval; /* @@ -956,6 +956,20 @@ static void atmel_shutdown(struct uart_port *port) } /* + * Flush any TX data submitted for DMA. Called when the TX circular + * buffer is reset. + */ +static void atmel_flush_buffer(struct uart_port *port) +{ + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); + + if (atmel_use_dma_tx(port)) { + UART_PUT_TCR(port, 0); + atmel_port->pdc_tx.ofs = 0; + } +} + +/* * Power / Clock management. */ static void atmel_serial_pm(struct uart_port *port, unsigned int state, @@ -1189,6 +1203,7 @@ static struct uart_ops atmel_pops = { .break_ctl = atmel_break_ctl, .startup = atmel_startup, .shutdown = atmel_shutdown, + .flush_buffer = atmel_flush_buffer, .set_termios = atmel_set_termios, .type = atmel_type, .release_port = atmel_release_port, |