diff --git a/drivers/net/korina.c b/drivers/net/korina.c
index 300c224..edaedc7 100644
--- a/drivers/net/korina.c
+++ b/drivers/net/korina.c
@@ -1135,7 +1135,7 @@
 
 	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_regs");
 	dev->base_addr = r->start;
-	lp->eth_regs = ioremap_nocache(r->start, r->end - r->start);
+	lp->eth_regs = ioremap_nocache(r->start, resource_size(r));
 	if (!lp->eth_regs) {
 		printk(KERN_ERR DRV_NAME ": cannot remap registers\n");
 		rc = -ENXIO;
@@ -1143,7 +1143,7 @@
 	}
 
 	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_dma_rx");
-	lp->rx_dma_regs = ioremap_nocache(r->start, r->end - r->start);
+	lp->rx_dma_regs = ioremap_nocache(r->start, resource_size(r));
 	if (!lp->rx_dma_regs) {
 		printk(KERN_ERR DRV_NAME ": cannot remap Rx DMA registers\n");
 		rc = -ENXIO;
@@ -1151,7 +1151,7 @@
 	}
 
 	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_dma_tx");
-	lp->tx_dma_regs = ioremap_nocache(r->start, r->end - r->start);
+	lp->tx_dma_regs = ioremap_nocache(r->start, resource_size(r));
 	if (!lp->tx_dma_regs) {
 		printk(KERN_ERR DRV_NAME ": cannot remap Tx DMA registers\n");
 		rc = -ENXIO;