virtio-rng: fix typos, comments

Fix typos, whitespace and update comments to match current
implementation.
Signed-off-by: NAmit Shah <amit.shah@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/virtio-rng.c

@@ -23,7 +23,6 @@ typedef struct VirtIORNG {
     /* Only one vq - guest puts buffer(s) on it when it needs entropy */
     VirtQueue *vq;
 
-    /* Config data for the device -- currently only chardev */
     VirtIORNGConf *conf;
 
     RngBackend *rng;
@@ -125,9 +124,9 @@ static int virtio_rng_load(QEMUFile *f, void *opaque, int version_id)
     virtio_load(&vrng->vdev, f);
 
     /* We may have an element ready but couldn't process it due to a quota
-       limit.  Make sure to try again after live migration when the quota may
-       have been reset.
-    */
+     * limit.  Make sure to try again after live migration when the quota may
+     * have been reset.
+     */
     virtio_rng_process(vrng);
 
     return 0;

include/qemu/rng.h

@@ -61,10 +61,10 @@ struct RngBackend
  * This function is used by the front-end to request entropy from an entropy
  * source.  This function can be called multiple times before @receive_entropy
  * is invoked with different values of @receive_entropy and @opaque.  The
- * backend will queue each request and handle appropriate.
+ * backend will queue each request and handle appropriately.
  *
  * The backend does not need to pass the full amount of data to @receive_entropy
- * but will pass at a value greater than 0.
+ * but will pass a value greater than 0.
  */
 void rng_backend_request_entropy(RngBackend *s, size_t size,
                                  EntropyReceiveFunc *receive_entropy,
@@ -87,7 +87,7 @@ void rng_backend_cancel_requests(RngBackend *s);
  *
  * This function will open the backend if it is not already open.  Calling this
  * function on an already opened backend will not result in an error.
- */ 
+ */
 void rng_backend_open(RngBackend *s, Error **errp);
 
 #endif