From: Rusty Russell <rusty@rustcorp.com.au>
Date: Tue, 16 Oct 2012 13:26:15 +0000 (+1030)
Subject: virtio: make virtqueue_add_buf() returning 0 on success, not capacity.
X-Git-Tag: v3.8-rc1~28^2~14
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=98e8c6bc66048db6f921ccd5b24f0e09804cfcca;p=pandora-kernel.git

virtio: make virtqueue_add_buf() returning 0 on success, not capacity.

Now noone relies on this behavior, we simplify virtqueue_add_buf() so it
return 0 or -errno.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
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