1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/serial/8250_pnp.c b/drivers/serial/8250_pnp.c
index ad0755919bcc..1de098e75497 100644
--- a/drivers/serial/8250_pnp.c
+++ b/drivers/serial/8250_pnp.c
@@ -439,7 +439,8 @@ serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
         }
 
         memset(&port, 0, sizeof(struct uart_port));
-        port.irq = pnp_irq(dev, 0);
+        if (pnp_irq_valid(dev, 0))
+                port.irq = pnp_irq(dev, 0);
         if (pnp_port_valid(dev, 0)) {
                 port.iobase = pnp_port_start(dev, 0);
                 port.iotype = UPIO_PORT;