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authorMichael S. Tsirkin <mst@redhat.com>2014-10-15 10:22:30 +1030
committerRusty Russell <rusty@rustcorp.com.au>2014-10-15 10:25:01 +1030
commit3569db593081fd88bbd6df21b9b0531873f2042c (patch)
treed16924296b98d3967f31f773c264ad48eef7faf3 /drivers/block
parent507613bf31f4bc0a344a1dfc1bc9074fed6eab8f (diff)
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virtio: add API to enable VQs early
virtio spec 0.9.X requires DRIVER_OK to be set before VQs are used, but some drivers use VQs before probe function returns. Since DRIVER_OK is set after probe, this violates the spec. Even though under virtio 1.0 transitional devices support this behaviour, we want to make it possible for those early callers to become spec compliant and eventually support non-transitional devices. Add API for drivers to call before using VQs. Sets DRIVER_OK internally. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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