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H A Dpvcalls-front.cdiff d90a1ca60a1eccb4383fe203c76223ab4c0799ed Fri Dec 21 17:06:32 CST 2018 Stefano Stabellini <sstabellini@kernel.org> pvcalls-front: don't return error when the ring is full

When the ring is full, size == array_size. It is not an error condition,
so simply return 0 instead of an error.

Signed-off-by: Stefano Stabellini <stefanos@xilinx.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>