--- 1.45/drivers/usb/host/ehci-hcd.c	Mon Feb 24 03:30:38 2003
+++ edited/drivers/usb/host/ehci-hcd.c	Wed Mar 19 07:05:33 2003
@@ -432,7 +432,11 @@
 	}
 
 	/* help hc dma work well with cachelines */
-	pci_set_mwi (ehci->hcd.pdev);
+	/* NOTE:  disabled until it works reliably ... some x86/Athlon
+	 * kernels are thinking 16 byte cachelines, not 64 byte ones,
+	 * so clearly the MWI prep logic is wrong.
+	 */
+	// pci_set_mwi (ehci->hcd.pdev);
 
 	/* clear interrupt enables, set irq latency */
 	temp = readl (&ehci->regs->command) & 0xff;