.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)
 {
        /* 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);
                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;
 
        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);
        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);