driver core: bus_type: add drv_groups

attribute groups are much more flexible than just a list of attributes,
due to their support for visibility of the attributes, and binary
attributes. Add drv_groups to struct bus_type which should be used
instead of drv_attrs.

drv_attrs will be removed from the structure soon.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/base.h b/drivers/base/base.h
index fccf954..2cbc677 100644 (file)
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -119,6 +119,11 @@ static inline int driver_match_device(struct device_driver *drv,
        return drv->bus->match ? drv->bus->match(dev, drv) : 1;
 }
 
+extern int driver_add_groups(struct device_driver *drv,
+                            const struct attribute_group **groups);
+extern void driver_remove_groups(struct device_driver *drv,
+                                const struct attribute_group **groups);
+
 extern int device_add_groups(struct device *dev,
                             const struct attribute_group **groups);
 extern void device_remove_groups(struct device *dev,

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 7b2dc5b..de5ce22 100644 (file)
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -725,6 +725,10 @@ int bus_add_driver(struct device_driver *drv)
                printk(KERN_ERR "%s: driver_add_attrs(%s) failed\n",
                        __func__, drv->name);
        }
+       error = driver_add_groups(drv, bus->drv_groups);
+       if (error)
+               printk(KERN_ERR "%s: driver_create_groups(%s) failed\n",
+                       __func__, drv->name);
 
        if (!drv->suppress_bind_attrs) {
                error = add_bind_files(drv);
@@ -762,6 +766,7 @@ void bus_remove_driver(struct device_driver *drv)
        if (!drv->suppress_bind_attrs)
                remove_bind_files(drv);
        driver_remove_attrs(drv->bus, drv);
+       driver_remove_groups(drv, drv->bus->drv_groups);
        driver_remove_file(drv, &driver_attr_uevent);
        klist_remove(&drv->p->knode_bus);
        pr_debug("bus: '%s': remove driver %s\n", drv->bus->name, drv->name);

diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 974e301..89db726 100644 (file)
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -123,8 +123,8 @@ void driver_remove_file(struct device_driver *drv,
 }
 EXPORT_SYMBOL_GPL(driver_remove_file);
 
-static int driver_add_groups(struct device_driver *drv,
-                            const struct attribute_group **groups)
+int driver_add_groups(struct device_driver *drv,
+                     const struct attribute_group **groups)
 {
        int error = 0;
        int i;
@@ -143,8 +143,8 @@ static int driver_add_groups(struct device_driver *drv,
        return error;
 }
 
-static void driver_remove_groups(struct device_driver *drv,
-                                const struct attribute_group **groups)
+void driver_remove_groups(struct device_driver *drv,
+                         const struct attribute_group **groups)
 {
        int i;
 

diff --git a/include/linux/device.h b/include/linux/device.h
index 3aec4a6..94d987f 100644 (file)
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -67,6 +67,7 @@ extern void bus_remove_file(struct bus_type *, struct bus_attribute *);
  * @dev_attrs: Default attributes of the devices on the bus.
  * @drv_attrs: Default attributes of the device drivers on the bus.
  * @dev_groups:        Default attributes of the devices on the bus.
+ * @drv_groups: Default attributes of the device drivers on the bus.
  * @match:     Called, perhaps multiple times, whenever a new device or driver
  *             is added for this bus. It should return a nonzero value if the
  *             given device can be handled by the given driver.
@@ -106,8 +107,9 @@ struct bus_type {
        struct device           *dev_root;
        struct bus_attribute    *bus_attrs;
        struct device_attribute *dev_attrs;     /* use dev_groups instead */
-       struct driver_attribute *drv_attrs;
+       struct driver_attribute *drv_attrs;     /* use drv_groups instead */
        const struct attribute_group **dev_groups;
+       const struct attribute_group **drv_groups;
 
        int (*match)(struct device *dev, struct device_driver *drv);
        int (*uevent)(struct device *dev, struct kobj_uevent_env *env);