diff -Nura linux-2.6.16-pa11/drivers/net/e100.c linux-2.6.16-pa11-e100/drivers/net/e100.c
--- linux-2.6.16-pa11/drivers/net/e100.c	2006-03-20 02:53:29.000000000 -0300
+++ linux-2.6.16-pa11-e100/drivers/net/e100.c	2006-04-05 14:48:09.000000000 -0300
@@ -2607,7 +2607,7 @@
 	SET_MODULE_OWNER(netdev);
 	SET_NETDEV_DEV(netdev, &pdev->dev);
 
-	nic->csr = ioremap(pci_resource_start(pdev, 0), sizeof(struct csr));
+	nic->csr = ioremap_nocache(pci_resource_start(pdev, 0), sizeof(struct csr));
 	if(!nic->csr) {
 		DPRINTK(PROBE, ERR, "Cannot map device registers, aborting.\n");
 		err = -ENOMEM;