virtio-rng: ask for more data if queue is not fully drained
commitf8693c2cd06d0401007b2c168126ab907f6da345
authorLadi Prosek <lprosek@redhat.com>
Thu, 3 Mar 2016 09:48:34 +0000 (3 10:48 +0100)
committerAmit Shah <amit.shah@redhat.com>
Thu, 3 Mar 2016 12:12:26 +0000 (3 17:42 +0530)
treea3b813016b49116b18a7e18c4f5021dd556c109c
parent60253ed1e6ec6d8e5ef2efe7bf755f475dce9956
virtio-rng: ask for more data if queue is not fully drained

This commit effectively reverts:

  commit 4621c1768ef5d12171cca2aa1473595ecb9f1c9e
  Author: Amit Shah <amit.shah@redhat.com>
  Date:   Wed Nov 21 11:21:19 2012 +0530

  virtio-rng: remove extra request for entropy

but instead of calling virtio_rng_process unconditionally, it
first checks to see if the queue is empty as a little bit of
optimization.

Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1456998514-19271-1-git-send-email-lprosek@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
hw/virtio/virtio-rng.c