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virtio: console: We support only one device at a time

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We support only one virtio_console device at a time. If multiple are
found, error out if one is already initialized.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Amit Shah 2010-01-18 19:14:59 +05:30 committed by Rusty Russell
parent 1dff399616
commit f550804ab9
1 changed files with 5 additions and 0 deletions
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5
drivers/char/virtio_console.c
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@ -204,6 +204,11 @@ static int __devinit virtcons_probe(struct virtio_device *dev)
struct virtqueue *vqs[2];
int err;
if (vdev) {
dev_warn(&vdev->dev,
"Multiple virtio-console devices not supported yet\n");
return -EEXIST;
}
vdev = dev;
/* This is the scratch page we use to receive console input */