serial: vt8500: Fix range-checking on vt8500_uart_ports

Fix two instances where the index to vt8500_uart_ports is tested
against > VT8500_MAX_PORTS. Correct usage should be >= VT8500_MAX_PORTS.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c
index f1a398c672fa..e50deb771616 100644
--- a/drivers/tty/serial/vt8500_serial.c
+++ b/drivers/tty/serial/vt8500_serial.c
@@ -560,7 +560,7 @@ static int vt8500_serial_probe(struct platform_device *pdev)
 
         if (np)
                 port = of_alias_get_id(np, "serial");
-                if (port > VT8500_MAX_PORTS)
+                if (port >= VT8500_MAX_PORTS)
                         port = -1;
         else
                 port = -1;
@@ -571,7 +571,7 @@ static int vt8500_serial_probe(struct platform_device *pdev)
                                         sizeof(vt8500_ports_in_use));
         }
 
-        if (port > VT8500_MAX_PORTS)
+        if (port >= VT8500_MAX_PORTS)
                 return -ENODEV;
 
         /* reserve the port id */