From 9c297d9ebd0d8c6d5e6e8675d527d6a221613abc Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Tue, 30 Jun 2015 14:12:42 +0100 Subject: [PATCH] serial: 8250: Don't crash when nr_uarts is 0 --- drivers/tty/serial/8250/8250_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index e8819aa20415..cf9c7d2e3f95 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -509,6 +509,8 @@ static void __init serial8250_isa_init_ports(void) 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]; -- 2.30.2