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- From f17d5198c547b208379e523bf400e55cef88ff56 Mon Sep 17 00:00:00 2001
- From: Phil Elwell <phil@raspberrypi.org>
- 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(+)
- --- 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_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];
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