Merge ../scsi-rc-fixes-2.6

1 files changed, 64 insertions, 44 deletions

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 12173d16bea7..7d8a7ce73fb3 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -372,19 +372,30 @@ int bus_add_device(struct device * dev)
                 pr_debug("bus %s: add device %s\n", bus->name, dev->bus_id);
                 error = device_add_attrs(bus, dev);
                 if (error)
-                        goto out;
+                        goto out_put;
                 error = sysfs_create_link(&bus->devices.kobj,
                                                 &dev->kobj, dev->bus_id);
                 if (error)
-                        goto out;
+                        goto out_id;
                 error = sysfs_create_link(&dev->kobj,
                                 &dev->bus->subsys.kset.kobj, "subsystem");
                 if (error)
-                        goto out;
+                        goto out_subsys;
                 error = sysfs_create_link(&dev->kobj,
                                 &dev->bus->subsys.kset.kobj, "bus");
+                if (error)
+                        goto out_deprecated;
         }
-out:
+        return 0;
+
+out_deprecated:
+        sysfs_remove_link(&dev->kobj, "subsystem");
+out_subsys:
+        sysfs_remove_link(&bus->devices.kobj, dev->bus_id);
+out_id:
+        device_remove_attrs(bus, dev);
+out_put:
+        put_bus(dev->bus);
         return error;
 }
 
@@ -428,8 +439,10 @@ void bus_remove_device(struct device * dev)
                 sysfs_remove_link(&dev->kobj, "bus");
                 sysfs_remove_link(&dev->bus->devices.kobj, dev->bus_id);
                 device_remove_attrs(dev->bus, dev);
-                dev->is_registered = 0;
-                klist_del(&dev->knode_bus);
+                if (dev->is_registered) {
+                        dev->is_registered = 0;
+                        klist_del(&dev->knode_bus);
+                }
                 pr_debug("bus %s: remove device %s\n", dev->bus->name, dev->bus_id);
                 device_release_driver(dev);
                 put_bus(dev->bus);
@@ -505,34 +518,36 @@ int bus_add_driver(struct device_driver *drv)
         struct bus_type * bus = get_bus(drv->bus);
         int error = 0;
 
-        if (bus) {
-                pr_debug("bus %s: add driver %s\n", bus->name, drv->name);
-                error = kobject_set_name(&drv->kobj, "%s", drv->name);
-                if (error)
-                        goto out_put_bus;
-                drv->kobj.kset = &bus->drivers;
-                if ((error = kobject_register(&drv->kobj)))
-                        goto out_put_bus;
-
-                error = driver_attach(drv);
-                if (error)
-                        goto out_unregister;
-                klist_add_tail(&drv->knode_bus, &bus->klist_drivers);
-                module_add_driver(drv->owner, drv);
-
-                error = driver_add_attrs(bus, drv);
-                if (error) {
-                        /* How the hell do we get out of this pickle? Give up */
-                        printk(KERN_ERR "%s: driver_add_attrs(%s) failed\n",
-                                __FUNCTION__, drv->name);
-                }
-                error = add_bind_files(drv);
-                if (error) {
-                        /* Ditto */
-                        printk(KERN_ERR "%s: add_bind_files(%s) failed\n",
-                                __FUNCTION__, drv->name);
-                }
+        if (!bus)
+                return 0;
+
+        pr_debug("bus %s: add driver %s\n", bus->name, drv->name);
+        error = kobject_set_name(&drv->kobj, "%s", drv->name);
+        if (error)
+                goto out_put_bus;
+        drv->kobj.kset = &bus->drivers;
+        if ((error = kobject_register(&drv->kobj)))
+                goto out_put_bus;
+
+        error = driver_attach(drv);
+        if (error)
+                goto out_unregister;
+        klist_add_tail(&drv->knode_bus, &bus->klist_drivers);
+        module_add_driver(drv->owner, drv);
+
+        error = driver_add_attrs(bus, drv);
+        if (error) {
+                /* How the hell do we get out of this pickle? Give up */
+                printk(KERN_ERR "%s: driver_add_attrs(%s) failed\n",
+                        __FUNCTION__, drv->name);
         }
+        error = add_bind_files(drv);
+        if (error) {
+                /* Ditto */
+                printk(KERN_ERR "%s: add_bind_files(%s) failed\n",
+                        __FUNCTION__, drv->name);
+        }
+
         return error;
 out_unregister:
         kobject_unregister(&drv->kobj);
@@ -552,16 +567,17 @@ out_put_bus:
 
 void bus_remove_driver(struct device_driver * drv)
 {
-        if (drv->bus) {
-                remove_bind_files(drv);
-                driver_remove_attrs(drv->bus, drv);
-                klist_remove(&drv->knode_bus);
-                pr_debug("bus %s: remove driver %s\n", drv->bus->name, drv->name);
-                driver_detach(drv);
-                module_remove_driver(drv);
-                kobject_unregister(&drv->kobj);
-                put_bus(drv->bus);
-        }
+        if (!drv->bus)
+                return;
+
+        remove_bind_files(drv);
+        driver_remove_attrs(drv->bus, drv);
+        klist_remove(&drv->knode_bus);
+        pr_debug("bus %s: remove driver %s\n", drv->bus->name, drv->name);
+        driver_detach(drv);
+        module_remove_driver(drv);
+        kobject_unregister(&drv->kobj);
+        put_bus(drv->bus);
 }
 
 
@@ -732,11 +748,15 @@ int bus_register(struct bus_type * bus)
 
         klist_init(&bus->klist_devices, klist_devices_get, klist_devices_put);
         klist_init(&bus->klist_drivers, NULL, NULL);
-        bus_add_attrs(bus);
+        retval = bus_add_attrs(bus);
+        if (retval)
+                goto bus_attrs_fail;
 
         pr_debug("bus type '%s' registered\n", bus->name);
         return 0;
 
+bus_attrs_fail:
+        kset_unregister(&bus->drivers);
 bus_drivers_fail:
         kset_unregister(&bus->devices);
 bus_devices_fail: