diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/atmel_serial.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 6b0f75eac8a2..5948f6b8049b 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -1633,12 +1633,24 @@ static int atmel_startup(struct uart_port *port) static void atmel_shutdown(struct uart_port *port) { struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); + /* - * Ensure everything is stopped. + * Clear out any scheduled tasklets before + * we destroy the buffers + */ + tasklet_kill(&atmel_port->tasklet); + + /* + * Ensure everything is stopped and + * disable all interrupts, port and break condition. */ atmel_stop_rx(port); atmel_stop_tx(port); + UART_PUT_CR(port, ATMEL_US_RSTSTA); + UART_PUT_IDR(port, -1); + + /* * Shut-down the DMA. */ @@ -1648,12 +1660,6 @@ static void atmel_shutdown(struct uart_port *port) atmel_port->release_tx(port); /* - * Disable all interrupts, port and break condition. - */ - UART_PUT_CR(port, ATMEL_US_RSTSTA); - UART_PUT_IDR(port, -1); - - /* * Free the interrupt */ free_irq(port->irq, port); |