diff options
| author | Amos Kong <akong@redhat.com> | 2013-11-21 18:53:23 +0800 |
|---|---|---|
| committer | Anthony Liguori <aliguori@amazon.com> | 2013-11-21 07:55:26 -0800 |
| commit | d44bb8604e87ecd3823f12f0c92d5e56d613de0d (patch) | |
| tree | f387c0a8005e623f2b262f53b2ba8f7d181d3a8a /hw | |
| parent | 376827d48922941d16ef9949672e86f820005d0a (diff) | |
virtio-rng: add check of period
If period is assigned to 0, limit timer will expire immediately.
It causes a qemu warning:
"main-loop: WARNING: I/O thread spun for 1000 iterations"
This limit is meaningless. This patch forbids to assign 0 to period.
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Amos Kong <akong@redhat.com>
Message-id: 1385031203-23790-1-git-send-email-akong@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/virtio/virtio-rng.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/virtio/virtio-rng.c b/hw/virtio/virtio-rng.c index 314e393520..b22ccf1008 100644 --- a/hw/virtio/virtio-rng.c +++ b/hw/virtio/virtio-rng.c @@ -139,6 +139,12 @@ static int virtio_rng_device_init(VirtIODevice *vdev) VirtIORNG *vrng = VIRTIO_RNG(vdev); Error *local_err = NULL; + if (!vrng->conf.period_ms > 0) { + qerror_report(QERR_INVALID_PARAMETER_VALUE, "period", + "a positive number"); + return -1; + } + if (vrng->conf.rng == NULL) { vrng->conf.default_backend = RNG_RANDOM(object_new(TYPE_RNG_RANDOM)); |