target/linux/brcm2708/patches-4.1/0097-serial-8250-Don-t-crash-when-nr_uarts-is-0.patch

   1 From 3e379748c62a7b9b70d790bdd192ac9a3a8b6586 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Tue, 30 Jun 2015 14:12:42 +0100
   4 Subject: [PATCH 097/171] serial: 8250: Don't crash when nr_uarts is 0
   5
   6 ---
   7  drivers/tty/serial/8250/8250_core.c | 2 ++
   8  1 file changed, 2 insertions(+)
   9
  10 --- a/drivers/tty/serial/8250/8250_core.c
  11 +++ b/drivers/tty/serial/8250/8250_core.c
  12 @@ -3262,6 +3262,8 @@ static void __init serial8250_isa_init_p
  13
  14         if (nr_uarts > UART_NR)
  15                 nr_uarts = UART_NR;
  16 +       if (!nr_uarts)
  17 +               return;
  18
  19         for (i = 0; i < nr_uarts; i++) {
  20                 struct uart_8250_port *up = &serial8250_ports[i];