input: utilize new cdev_device_add helper function

Replace the open coded registration of the cdev and dev with the
new device_add_cdev() helper in evdev, joydev and mousedev. The helper
replaces a common pattern by taking the proper reference against the
parent device and adding both the cdev and the device.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 9 deletions

diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
index b604564dec5c..0e0ff84088fd 100644
--- a/drivers/input/mousedev.c
+++ b/drivers/input/mousedev.c
@@ -812,8 +812,6 @@ static void mousedev_cleanup(struct mousedev *mousedev)
         mousedev_mark_dead(mousedev);
         mousedev_hangup(mousedev);
 
-        cdev_del(&mousedev->cdev);
-
         /* mousedev is marked dead so no one else accesses mousedev->open */
         if (mousedev->open)
                 input_close_device(handle);
@@ -901,12 +899,8 @@ static struct mousedev *mousedev_create(struct input_dev *dev,
         }
 
         cdev_init(&mousedev->cdev, &mousedev_fops);
-        mousedev->cdev.kobj.parent = &mousedev->dev.kobj;
-        error = cdev_add(&mousedev->cdev, mousedev->dev.devt, 1);
-        if (error)
-                goto err_unregister_handle;
 
-        error = device_add(&mousedev->dev);
+        error = cdev_device_add(&mousedev->cdev, &mousedev->dev);
         if (error)
                 goto err_cleanup_mousedev;
 
@@ -914,7 +908,6 @@ static struct mousedev *mousedev_create(struct input_dev *dev,
 
  err_cleanup_mousedev:
         mousedev_cleanup(mousedev);
- err_unregister_handle:
         if (!mixdev)
                 input_unregister_handle(&mousedev->handle);
  err_free_mousedev:
@@ -927,7 +920,7 @@ static struct mousedev *mousedev_create(struct input_dev *dev,
 
 static void mousedev_destroy(struct mousedev *mousedev)
 {
-        device_del(&mousedev->dev);
+        cdev_device_del(&mousedev->cdev, &mousedev->dev);
         mousedev_cleanup(mousedev);
         input_free_minor(MINOR(mousedev->dev.devt));
         if (mousedev != mousedev_mix)