From 3e379748c62a7b9b70d790bdd192ac9a3a8b6586 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Tue, 30 Jun 2015 14:12:42 +0100 Subject: [PATCH 097/171] serial: 8250: Don't crash when nr_uarts is 0 --- drivers/tty/serial/8250/8250_core.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -3262,6 +3262,8 @@ static void __init serial8250_isa_init_p if (nr_uarts > UART_NR) nr_uarts = UART_NR; + if (!nr_uarts) + return; for (i = 0; i < nr_uarts; i++) { struct uart_8250_port *up = &serial8250_ports[i];