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| author | David S. Miller <davem@davemloft.net> | 2014-07-22 11:44:59 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-07-22 11:44:59 +0400 |
| commit | 8fd90bb889635fa1e7f80a3950948cc2e74c1446 (patch) | |
| tree | 1490343b5ad9f88b9333e53fa9457c00cbf6c2d1 /drivers/char/hw_random/virtio-rng.c | |
| parent | 1bb4238b17b5de6cdc120970a9d00dd8a44f40df (diff) | |
| parent | 15ba2236f3556fc01b9ca91394465152b5ea74b6 (diff) | |
| download | linux-8fd90bb889635fa1e7f80a3950948cc2e74c1446.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/infiniband/hw/cxgb4/device.c
The cxgb4 conflict was simply overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/char/hw_random/virtio-rng.c')
| -rw-r--r-- | drivers/char/hw_random/virtio-rng.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c index f3e71501de54..e9b15bc18b4d 100644 --- a/drivers/char/hw_random/virtio-rng.c +++ b/drivers/char/hw_random/virtio-rng.c @@ -38,6 +38,8 @@ struct virtrng_info { int index; }; +static bool probe_done; + static void random_recv_done(struct virtqueue *vq) { struct virtrng_info *vi = vq->vdev->priv; @@ -67,6 +69,13 @@ static int virtio_read(struct hwrng *rng, void *buf, size_t size, bool wait) int ret; struct virtrng_info *vi = (struct virtrng_info *)rng->priv; + /* + * Don't ask host for data till we're setup. This call can + * happen during hwrng_register(), after commit d9e7972619. + */ + if (unlikely(!probe_done)) + return 0; + if (!vi->busy) { vi->busy = true; init_completion(&vi->have_data); @@ -137,6 +146,7 @@ static int probe_common(struct virtio_device *vdev) return err; } + probe_done = true; return 0; } |