diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_early.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_early.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c index d7b831bcf367..1701d00fd9f6 100644 --- a/drivers/tty/serial/8250/8250_early.c +++ b/drivers/tty/serial/8250/8250_early.c @@ -149,12 +149,18 @@ static int __init early_serial8250_setup(struct earlycon_device *device, return 0; if (!device->baud) { + struct uart_port *port = &device->port; + unsigned int ier; + device->baud = probe_baud(&device->port); snprintf(device->options, sizeof(device->options), "%u", device->baud); - } - init_port(device); + /* assume the device was initialized, only mask interrupts */ + ier = serial8250_early_in(port, UART_IER); + serial8250_early_out(port, UART_IER, ier & UART_IER_UUE); + } else + init_port(device); device->con->write = early_serial8250_write; return 0; |