hw_random core can ask for initial randomness after a slight delay after
probe() finishes, and we can contribute to system randomness at that
point. Tell the hw_random core by setting the HWRNG_DELAY_READ_AT_INIT
flag.
CC: Kees Cook <keesc...@chromium.org>
CC: Jason Cooper <ja...@lakedaemon.net>
CC: Herbert Xu <herb...@gondor.apana.org.au>
Signed-off-by: Amit Shah <amit.s...@redhat.com>
---
drivers/char/hw_random/virtio-rng.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/char/hw_random/virtio-rng.c
b/drivers/char/hw_random/virtio-rng.c
index d8ffebd..f53f1e8 100644
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -123,6 +123,7 @@ static int probe_common(struct virtio_device *vdev)
.cleanup = virtio_cleanup,
.priv = (unsigned long)vi,
.name = vi->name,
+ .flags = HWRNG_DELAY_READ_AT_INIT,
};
vdev->priv = vi;
--
1.9.3
--
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