Staging: hv: Change the signature for vmbus_child_driver_register

In preparation for moving the element driver from the
struct driver_context to struct hv_driver, change the
signature for the function vmbus_child_driver_register()
to take a pointer to struct device_driver.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/blkvsc_drv.c

@@ -191,7 +191,7 @@ static int blkvsc_drv_init(int (*drv_init)(struct hv_driver *drv))
 	drv_ctx->driver.shutdown = blkvsc_shutdown;
 
 	/* The driver belongs to vmbus */
-	ret = vmbus_child_driver_register(drv_ctx);
+	ret = vmbus_child_driver_register(&drv_ctx->driver);
 
 	return ret;
 }

drivers/staging/hv/hv_mouse.c

@@ -1025,7 +1025,7 @@ static int __init mousevsc_init(void)
 	drv_ctx->driver.remove = mousevsc_remove;
 
 	/* The driver belongs to vmbus */
-	vmbus_child_driver_register(drv_ctx);
+	vmbus_child_driver_register(&drv_ctx->driver);
 
 	return 0;
 }

drivers/staging/hv/netvsc_drv.c

@@ -515,7 +515,7 @@ static int netvsc_drv_init(int (*drv_init)(struct hv_driver *drv))
 	drv_ctx->driver.remove = netvsc_remove;
 
 	/* The driver belongs to vmbus */
-	ret = vmbus_child_driver_register(drv_ctx);
+	ret = vmbus_child_driver_register(&drv_ctx->driver);
 
 	return ret;
 }

drivers/staging/hv/storvsc_drv.c

@@ -168,7 +168,7 @@ static int storvsc_drv_init(int (*drv_init)(struct hv_driver *drv))
 	drv_ctx->driver.remove = storvsc_remove;
 
 	/* The driver belongs to vmbus */
-	ret = vmbus_child_driver_register(drv_ctx);
+	ret = vmbus_child_driver_register(&drv_ctx->driver);
 
 	return ret;
 }

drivers/staging/hv/vmbus.h

@@ -61,7 +61,7 @@ static inline struct driver_context *driver_to_driver_context(struct device_driv
 
 
 /* Vmbus interface */
-int vmbus_child_driver_register(struct driver_context *driver_ctx);
+int vmbus_child_driver_register(struct device_driver *drv);
 void vmbus_child_driver_unregister(struct driver_context *driver_ctx);
 
 extern struct completion hv_channel_ready;

drivers/staging/hv/vmbus_drv.c

@@ -617,27 +617,26 @@ static void vmbus_bus_exit(void)
 
 /**
  * vmbus_child_driver_register() - Register a vmbus's child driver
- * @driver_ctx:        Pointer to driver structure you want to register
+ * @drv:        Pointer to driver structure you want to register
  *
- * @driver_ctx is of type &struct driver_context
  *
  * Registers the given driver with Linux through the 'driver_register()' call
  * And sets up the hyper-v vmbus handling for this driver.
  * It will return the state of the 'driver_register()' call.
  *
  * Mainly used by Hyper-V drivers.
  */
-int vmbus_child_driver_register(struct driver_context *driver_ctx)
+int vmbus_child_driver_register(struct device_driver *drv)
 {
 	int ret;
 
 	DPRINT_INFO(VMBUS_DRV, "child driver (%p) registering - name %s",
-		    driver_ctx, driver_ctx->driver.name);
+		    drv, drv->name);
 
 	/* The child driver on this vmbus */
-	driver_ctx->driver.bus = &vmbus_drv.bus;
+	drv->bus = &vmbus_drv.bus;
 
-	ret = driver_register(&driver_ctx->driver);
+	ret = driver_register(drv);
 
 	vmbus_request_offers();