From 44454bcdb90532b372c74e3546043d8a3a468939 Mon Sep 17 00:00:00 2001
From: Russell King <rmk@dyn-67.arm.linux.org.uk>
Date: Thu, 30 Jun 2005 22:41:22 +0100
Subject: [PATCH] [PATCH] Serial: Fix small CONFIG_SERIAL_8250_NR_UARTS
If CONFIG_SERIAL_8250_NR_UARTS is smaller than the array size in
asm/serial.h, we trampled on memory which wasn't ours. Take our
big boots away by limiting the number of ports initialised to the
smaller of ...NR_UARTS and the array size.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
drivers/serial/8250.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 9224fc3184ea..7e8fc7c1d4cc 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2061,7 +2061,8 @@ static void __init serial8250_isa_init_ports(void)
up->port.ops = &serial8250_pops;
}
- for (i = 0, up = serial8250_ports; i < ARRAY_SIZE(old_serial_port);
+ for (i = 0, up = serial8250_ports;
+ i < ARRAY_SIZE(old_serial_port) && i < UART_NR;
i++, up++) {
up->port.iobase = old_serial_port[i].port;
up->port.irq = irq_canonicalize(old_serial_port[i].irq);