From: Amos Kong <akong@redhat.com>
Date: Fri, 18 Apr 2014 05:45:41 +0000 (+0800)
Subject: virtio_net: zero is an invald queue_pairs number
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~214^2~59
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c18e9cd623b8aa88090615602c3db7f1386a139d;p=pandora-kernel.git

virtio_net: zero is an invald queue_pairs number

Execute "ethtool -L eth0 combined 0" in guest, if multiqueue
is enabled, virtnet_send_command() will return -EINVAL error,
there is a validation in QEMU.

But if multiqueue is disabled, virtnet_set_queues() will just
return zero (success). We should return error for this situation.

Signed-off-by: Amos Kong <akong@redhat.com>
Acked-by:  Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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