openwrtv3/target/linux/brcm2708/patches-4.9/0010-serial-8250-Don-t-crash-when-nr_uarts-is-0.patch
Álvaro Fernández Rojas baad22eed3 brcm2708: update linux 4.9 patches to latest version
As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.9.y

- Remove led1 from diag.sh for RPi3 since it causes boot issues.
- Fix modules.mk typos.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2017-03-04 19:37:50 +01:00

20 lines
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Diff

From cc016c1876877aa42a84cc9c0c89af1b7410ff67 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];