[PATCH] md: Fix Kconfig error

[cascardo/linux.git] / drivers / base / driver.c

diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 291c595..b400314 100644 (file)
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -28,6 +28,7 @@ static struct device * next_device(struct klist_iter * i)
 /**
  *     driver_for_each_device - Iterator for devices bound to a driver.
  *     @drv:   Driver we're iterating.
+ *     @start: Device to begin with
  *     @data:  Data to pass to the callback.
  *     @fn:    Function to call for each device.
  *
@@ -57,7 +58,7 @@ EXPORT_SYMBOL_GPL(driver_for_each_device);
 
 /**
  * driver_find_device - device iterator for locating a particular device.
- * @driver: The device's driver
+ * @drv: The device's driver
  * @start: Device to begin with
  * @data: Data to pass to match function
  * @match: Callback function to check device
@@ -142,6 +143,19 @@ void put_driver(struct device_driver * drv)
        kobject_put(&drv->kobj);
 }
 
+static void klist_devices_get(struct klist_node *n)
+{
+       struct device *dev = container_of(n, struct device, knode_driver);
+
+       get_device(dev);
+}
+
+static void klist_devices_put(struct klist_node *n)
+{
+       struct device *dev = container_of(n, struct device, knode_driver);
+
+       put_device(dev);
+}
 
 /**
  *     driver_register - register driver with bus
@@ -157,7 +171,12 @@ void put_driver(struct device_driver * drv)
  */
 int driver_register(struct device_driver * drv)
 {
-       klist_init(&drv->klist_devices);
+       if ((drv->bus->probe && drv->probe) ||
+           (drv->bus->remove && drv->remove) ||
+           (drv->bus->shutdown && drv->shutdown)) {
+               printk(KERN_WARNING "Driver '%s' needs updating - please use bus_type methods\n", drv->name);
+       }
+       klist_init(&drv->klist_devices, klist_devices_get, klist_devices_put);
        init_completion(&drv->unloaded);
        return bus_add_driver(drv);
 }