virtio: console: Error out if we can't allocate buffers for control queue

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With MULTIPORT support, the control queue is an integral part of the
functioning of the device. If we can't get any buffers allocated, the
host won't be able to relay important information and the device may not
function as intended.

Ensure 'probe' doesn't succeed until the control queue has at least one
buffer allocated for its ivq.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

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Amit Shah 2010-02-12 10:32:17 +05:30 • committed by Rusty Russell

parent 7177876fea

commit 22a29eacd2

1 changed files with 21 additions and 6 deletions

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27

drivers/char/virtio_console.c

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