diff options
Diffstat (limited to 'drivers/serial/serial_core.c')
| -rw-r--r-- | drivers/serial/serial_core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index 95831808334..d5f636fbf29 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -696,7 +696,8 @@ static int uart_set_info(struct uart_state *state, (new_serial.baud_base != port->uartclk / 16) || (close_delay != state->close_delay) || (closing_wait != state->closing_wait) || - (new_serial.xmit_fifo_size != port->fifosize) || + (new_serial.xmit_fifo_size && + new_serial.xmit_fifo_size != port->fifosize) || (((new_flags ^ old_flags) & ~UPF_USR_MASK) != 0)) goto exit; port->flags = ((port->flags & ~UPF_USR_MASK) | @@ -801,7 +802,8 @@ static int uart_set_info(struct uart_state *state, port->custom_divisor = new_serial.custom_divisor; state->close_delay = close_delay; state->closing_wait = closing_wait; - port->fifosize = new_serial.xmit_fifo_size; + if (new_serial.xmit_fifo_size) + port->fifosize = new_serial.xmit_fifo_size; if (state->info->tty) state->info->tty->low_latency = (port->flags & UPF_LOW_LATENCY) ? 1 : 0; |