openwrt/target/linux/brcm2708/patches-4.9/950-0010-serial-8250-Don-t-crash-when-nr_uarts-is-0.patch
Rafał Miłecki fce21ae4cc brcm2708: rename all patches from raspberrypi git tree to use 950 prefix
Right now all brcm2708 patches are extracted from the non-mainline
raspberrypi/linux git tree. Many of them are hacks and/or are unneeded
in LEDE. Raspberry Pi is getting better and better mainline support so
it would be nice to finally start maintaining patches in a cleaner way:
1) Backport patches accepted in upstream tree
2) Start using upstream drivers
3) Pick only these patches that are needed for more complete support

Handling above tasks requires grouping patches - ideally using the same
prefixes as generic ones. It means we should rename existing patches to
use some high prefix. This will allow e.g. use 0xx for backported code.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Stijn Tintel <stijn@linux-ipv6.be>
2017-03-24 08:06:35 +01:00

21 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];