diff --git a/drivers/net/ns83820.c b/drivers/net/ns83820.c
index 5a3488f..447c2c4 100644
--- a/drivers/net/ns83820.c
+++ b/drivers/net/ns83820.c
@@ -1405,6 +1405,13 @@
 	.get_link        = ns83820_get_link
 };
 
+static inline void ns83820_disable_interrupts(struct ns83820 *dev)
+{
+	writel(0, dev->base + IMR);
+	writel(0, dev->base + IER);
+	readl(dev->base + IER);
+}
+
 /* this function is called in irq context from the ISR */
 static void ns83820_mib_isr(struct ns83820 *dev)
 {
@@ -1557,10 +1564,7 @@
 	/* FIXME: protect against interrupt handler? */
 	del_timer_sync(&dev->tx_watchdog);
 
-	/* disable interrupts */
-	writel(0, dev->base + IMR);
-	writel(0, dev->base + IER);
-	readl(dev->base + IER);
+	ns83820_disable_interrupts(dev);
 
 	dev->rx_info.up = 0;
 	synchronize_irq(dev->pci_dev->irq);
@@ -2023,10 +2027,7 @@
 		dev->tx_descs, (long)dev->tx_phy_descs,
 		dev->rx_info.descs, (long)dev->rx_info.phy_descs);
 
-	/* disable interrupts */
-	writel(0, dev->base + IMR);
-	writel(0, dev->base + IER);
-	readl(dev->base + IER);
+	ns83820_disable_interrupts(dev);
 
 	dev->IMR_cache = 0;
 
@@ -2250,9 +2251,7 @@
 	return 0;
 
 out_cleanup:
-	writel(0, dev->base + IMR);	/* paranoia */
-	writel(0, dev->base + IER);
-	readl(dev->base + IER);
+	ns83820_disable_interrupts(dev); /* paranoia */
 out_free_irq:
 	rtnl_unlock();
 	free_irq(pci_dev->irq, ndev);
@@ -2277,9 +2276,7 @@
 	if (!ndev)			/* paranoia */
 		return;
 
-	writel(0, dev->base + IMR);	/* paranoia */
-	writel(0, dev->base + IER);
-	readl(dev->base + IER);
+	ns83820_disable_interrupts(dev); /* paranoia */
 
 	unregister_netdev(ndev);
 	free_irq(dev->pci_dev->irq, ndev);