===================================================================
RCS file: /opt/CVS/linux/drivers/edac/e752x_edac.c,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 e752x_edac.c
--- drivers/edac/e752x_edac.c	21 Apr 2006 02:58:32 -0000	1.1.1.1
+++ drivers/edac/e752x_edac.c	25 Apr 2006 13:26:33 -0000
@@ -755,10 +755,16 @@
 	debugf0("MC: " __FILE__ ": %s(): mci\n", __func__);
 	debugf0("Starting Probe1\n");
 
-	/* enable device 0 function 1 */
+	/* check to see if device 0 function 1 is enbaled if it isn't we assume
+	 * the BIOS has reserved it for a reason and is expecting exclusive
+	 * access, we take care to not violate that assumption and fail the
+	 * probe. */
 	pci_read_config_byte(pdev, E752X_DEVPRES1, &stat8);
-	stat8 |= (1 << 5);
-	pci_write_config_byte(pdev, E752X_DEVPRES1, stat8);
+	if (!(stat8 & (1 << 5))) {
+		printk(KERN_WARNING "contact your bios vendor to see if the " 
+		"E752x error registers can be safely un-hidden\n");
+		goto fail;
+	}
 
 	/* need to find out the number of channels */
 	pci_read_config_dword(pdev, E752X_DRC, &drc);