diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/earlycon.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c index 57c70851f22a..88d08ba1ca83 100644 --- a/drivers/tty/serial/earlycon.c +++ b/drivers/tty/serial/earlycon.c @@ -253,6 +253,9 @@ int __init of_setup_earlycon(const struct earlycon_id *match, bool big_endian; u64 addr; + if (early_con.flags & CON_ENABLED) + return -EALREADY; + spin_lock_init(&port->lock); port->iotype = UPIO_MEM; addr = of_flat_dt_translate_address(node); |