drivers/serial: use nr_irqs

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index 3df2aae..667b4b8 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -1157,7 +1157,7 @@
 {
 	struct sci_port *s = &sci_ports[port->line];
 
-	if (ser->irq != s->irqs[SCIx_TXI_IRQ] || ser->irq > NR_IRQS)
+	if (ser->irq != s->irqs[SCIx_TXI_IRQ] || ser->irq > nr_irqs)
 		return -EINVAL;
 	if (ser->baud_base < 2400)
 		/* No paper tape reader for Mitch.. */