diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
index 7410e09..00d7c0a 100644
--- a/drivers/serial/s3c2410.c
+++ b/drivers/serial/s3c2410.c
@@ -1066,6 +1066,8 @@
 	port->mapbase	= res->start;
 	port->membase	= S3C24XX_VA_UART + (res->start - S3C24XX_PA_UART);
 	port->irq	= platform_get_irq(platdev, 0);
+	if (port->irq < 0)
+		port->irq = 0;
 
 	ourport->clk	= clk_get(&platdev->dev, "uart");