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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-06-30 22:41:22 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-06-30 22:41:22 +0100
commit44454bcdb90532b372c74e3546043d8a3a468939 (patch)
tree823fa555fe7c419c4cbc0616fff5b6dadd4d81fa
parent9b4311eedb17fa88f02e4876cd6aa9a08e383cd6 (diff)
[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>
-rw-r--r--drivers/serial/8250.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 9224fc3184e..7e8fc7c1d4c 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);