From 08e53fbdb85c0f6f45c0f7c1ea3defc1752a95ce Mon Sep 17 00:00:00 2001
From: Amos Kong <akong@redhat.com>
Date: Wed, 14 May 2014 10:33:46 +0930
Subject: [PATCH] virtio-rng: support multiple virtio-rng devices

Current hwrng core supports to register multiple hwrng devices,
and there is only one device really works in the same time.
QEMU alsu supports to have multiple virtio-rng backends.

This patch changes virtio-rng driver to support multiple
virtio-rng devices.

]# cat /sys/class/misc/hw_random/rng_available
virtio_rng.0 virtio_rng.1
]# cat /sys/class/misc/hw_random/rng_current
virtio_rng.0
]# echo -n virtio_rng.1 > /sys/class/misc/hw_random/rng_current
]# dd if=/dev/hwrng of=/dev/null

Signed-off-by: Amos Kong <akong@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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