This patch does away with the cast on void * as it is unnecessary.
Semantic patch used is as follows:
@r@
expression x;
void* e;
type T;
identifier f;
@@
(
  *((T *)e)
|
  ((T *)x)[...]
|
  ((T *)x)->f
|
- (T *)
  e
)
Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 
                buf = NULL;
                len = 0;
-               if (obd_ioctl_getdata(&buf, &len, (void *)uarg)) {
+               if (obd_ioctl_getdata(&buf, &len, uarg)) {
                        err = -EINVAL;
                        goto out;
                }
 
                memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid));
 
-               err = copy_to_user((void *)uarg, buf, len);
+               err = copy_to_user(uarg, buf, len);
                if (err)
                        err = -EFAULT;
                obd_ioctl_freedata(buf, len);