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virtio: Complete feature negotation before updating status

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lguest (in rusty's use-tun-ringfd patch) assumes that the
guest has updated its feature bits before setting its status
to VIRTIO_CONFIG_S_DRIVER_OK.

That's pretty reasonable, so let's make it so.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mark McLoughlin 2008-06-15 23:20:50 +10:00 committed by Linus Torvalds
parent 0269c5c6d9
commit b92dea67cc
1 changed files with 1 additions and 1 deletions
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2
drivers/virtio/virtio.c
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@ -124,9 +124,9 @@ static int virtio_dev_probe(struct device *_d)
if (err)
add_status(dev, VIRTIO_CONFIG_S_FAILED);
else {
add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK);
/* They should never have set feature bits beyond 32 */
dev->config->set_features(dev, dev->features[0]);
add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK);
}
return err;
}