[SCSI] correct transport class abstraction to work outside SCSI

I recently tried to construct a totally generic transport class and
found there were certain features missing from the current abstract
transport class.  Most notable is that you have to hang the data on the
class_device but most of the API is framed in terms of the generic
device, not the class_device.

These changes are two fold

- Provide the class_device to all of the setup and configure APIs
- Provide and extra API to take the device and the attribute class and
  return the corresponding class_device

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 11 insertions, 6 deletions

diff --git a/drivers/base/transport_class.c b/drivers/base/transport_class.c
index 6c2b447a3336..4fb4c5de8470 100644
--- a/drivers/base/transport_class.c
+++ b/drivers/base/transport_class.c
@@ -64,7 +64,9 @@ void transport_class_unregister(struct transport_class *tclass)
 }
 EXPORT_SYMBOL_GPL(transport_class_unregister);
 
-static int anon_transport_dummy_function(struct device *dev)
+static int anon_transport_dummy_function(struct transport_container *tc,
+                                         struct device *dev,
+                                         struct class_device *cdev)
 {
         /* do nothing */
         return 0;
@@ -115,9 +117,10 @@ static int transport_setup_classdev(struct attribute_container *cont,
                                     struct class_device *classdev)
 {
         struct transport_class *tclass = class_to_transport_class(cont->class);
+        struct transport_container *tcont = attribute_container_to_transport_container(cont);
 
         if (tclass->setup)
-                tclass->setup(dev);
+                tclass->setup(tcont, dev, classdev);
 
         return 0;
 }
@@ -178,12 +181,14 @@ void transport_add_device(struct device *dev)
 EXPORT_SYMBOL_GPL(transport_add_device);
 
 static int transport_configure(struct attribute_container *cont,
-                               struct device *dev)
+                               struct device *dev,
+                               struct class_device *cdev)
 {
         struct transport_class *tclass = class_to_transport_class(cont->class);
+        struct transport_container *tcont = attribute_container_to_transport_container(cont);
 
         if (tclass->configure)
-                tclass->configure(dev);
+                tclass->configure(tcont, dev, cdev);
 
         return 0;
 }
@@ -202,7 +207,7 @@ static int transport_configure(struct attribute_container *cont,
  */
 void transport_configure_device(struct device *dev)
 {
-        attribute_container_trigger(dev, transport_configure);
+        attribute_container_device_trigger(dev, transport_configure);
 }
 EXPORT_SYMBOL_GPL(transport_configure_device);
 
@@ -215,7 +220,7 @@ static int transport_remove_classdev(struct attribute_container *cont,
         struct transport_class *tclass = class_to_transport_class(cont->class);
 
         if (tclass->remove)
-                tclass->remove(dev);
+                tclass->remove(tcont, dev, classdev);
 
         if (tclass->remove != anon_transport_dummy_function) {
                 if (tcont->statistics)