[PATCH] EDD compile fixes

This fixes edd.c.  The SCSI changes replaced host_driverfs_dev with a
pointer to a struct device.  But, the Scsi_Host that the
edd_find_matching_scsi_device() was trying to get was never used anyway.
So, I removed it.

This also fixes a problem that I introduced a while ago, and that I
promised Matt I would fix: all attributes were getting added by default,
though they shouldn't be.  This regards only the truly default
attributes as default, and uses the test mechanism of the other
attributes to determine whether to add them or not.

arch/i386/kernel/edd.c

@@ -575,17 +575,25 @@ static EDD_DEVICE_ATTR(interface, 0444, edd_show_interface, edd_has_edd30);
 static EDD_DEVICE_ATTR(host_bus, 0444, edd_show_host_bus, edd_has_edd30);
 
 
+/* These are default attributes that are added for every edd
+ * device discovered.
+ */
 static struct attribute * def_attrs[] = {
 	&edd_attr_raw_data.attr,
 	&edd_attr_version.attr,
 	&edd_attr_extensions.attr,
 	&edd_attr_info_flags.attr,
 	&edd_attr_sectors.attr,
-	&edd_attr_default_cylinders.attr,
-	&edd_attr_default_heads.attr,
-	&edd_attr_default_sectors_per_track.attr,
-	&edd_attr_interface.attr,
-	&edd_attr_host_bus.attr,
+	NULL,
+};
+
+/* These attributes are conditional and only added for some devices. */
+static struct edd_attribute * edd_attrs[] = {
+	&edd_attr_default_cylinders,
+	&edd_attr_default_heads,
+	&edd_attr_default_sectors_per_track,
+	&edd_attr_interface,
+	&edd_attr_host_bus,
 	NULL,
 };
 
@@ -686,8 +694,6 @@ edd_match_scsidev(struct edd_device *edev, struct scsi_device *sd)
  * The reference counting probably isn't the best it could be.
  */
 
-#define	to_scsi_host(d)	\
-	container_of(d, struct Scsi_Host, host_driverfs_dev)
 #define children_to_dev(n) container_of(n,struct device,node)
 static struct scsi_device *
 edd_find_matching_scsi_device(struct edd_device *edev)
@@ -697,7 +703,6 @@ edd_find_matching_scsi_device(struct edd_device *edev)
 	struct scsi_device *sd = NULL;
 	struct device *shost_dev, *sdev_dev;
 	struct pci_dev *pci_dev;
-	struct Scsi_Host *sh;
 
 	rc = edd_dev_is_type(edev, "SCSI");
 	if (rc)
@@ -712,7 +717,6 @@ edd_find_matching_scsi_device(struct edd_device *edev)
 	list_for_each(shost_node, &pci_dev->dev.children) {
 		shost_dev = children_to_dev(shost_node);
 		get_device(shost_dev);
-		sh = to_scsi_host(shost_dev);
 
 		list_for_each(sdev_node, &shost_dev->children) {
 			sdev_dev = children_to_dev(sdev_node);
@@ -771,6 +775,24 @@ edd_device_unregister(struct edd_device *edev)
 	kobject_unregister(&edev->kobj);
 }
 
+static void populate_dir(struct edd_device * edev)
+{
+	struct edd_attribute * attr;
+	int error = 0;
+	int i;
+
+	for (i = 0; (attr = edd_attrs[i]) && !error; i++) {
+		if (!attr->test || 
+		    (attr->test && !attr->test(edev)))
+			error = sysfs_create_file(&edev->kobj,&attr->attr);
+	}
+	
+	if (!error) {
+		edd_create_symlink_to_pcidev(edev);
+		edd_create_symlink_to_scsidev(edev);
+	}
+}
+
 static int
 edd_device_register(struct edd_device *edev, int i)
 {
@@ -780,15 +802,12 @@ edd_device_register(struct edd_device *edev, int i)
 		return 1;
 	memset(edev, 0, sizeof (*edev));
 	edd_dev_set_info(edev, &edd[i]);
-	kobject_init(&edev->kobj);
 	snprintf(edev->kobj.name, EDD_DEVICE_NAME_SIZE, "int13_dev%02x",
 		 edd[i].device);
 	edev->kobj.subsys = &edd_subsys;
 	error = kobject_register(&edev->kobj);
-	if (!error) {
-		edd_create_symlink_to_pcidev(edev);
-		edd_create_symlink_to_scsidev(edev);
-	}
+	if (!error)
+		populate_dir(edev);
 	return error;
 }