diff -ur prism54-cvs-latest/ksrc/islpci_dev.c prism54-cvs-latest-fix/ksrc/islpci_dev.c
--- prism54-cvs-latest/ksrc/islpci_dev.c	2004-05-29 18:06:49.000000000 +0300
+++ prism54-cvs-latest-fix/ksrc/islpci_dev.c	2004-06-29 18:52:02.006520304 +0300
@@ -773,6 +773,7 @@
 struct net_device *
 islpci_setup(struct pci_dev *pdev)
 {
+	u_int8_t cz;
 	islpci_private *priv;
 	struct net_device *ndev = alloc_etherdev(sizeof (islpci_private));
 
@@ -785,6 +786,12 @@
 	SET_NETDEV_DEV(ndev, &pdev->dev);
 #endif
 
+	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
+        if (csz == 0) {
+		csz = L1_CACHE_BYTES / sizeof(u_int32_t);
+		pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
+	}
+
 	/* setup the structure members */
 	ndev->base_addr = pci_resource_start(pdev, 0);
 	ndev->irq = pdev->irq;