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virtio: Allow virtio to be modular and used by modules

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This is needed for the virtio PCI device to be compiled as a module.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2008-02-04 23:50:05 -05:00
parent 15f9c8903c
commit c6fd47011b
3 changed files with 14 additions and 2 deletions
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4
drivers/virtio/Kconfig
View File

@ -1,8 +1,8 @@
# Virtio always gets selected by whoever wants it. # Virtio always gets selected by whoever wants it.
config VIRTIO config VIRTIO
bool tristate
# Similarly the virtio ring implementation. # Similarly the virtio ring implementation.
config VIRTIO_RING config VIRTIO_RING
bool tristate
depends on VIRTIO depends on VIRTIO

8
drivers/virtio/virtio.c
View File

@ -162,4 +162,12 @@ static int virtio_init(void)
panic("virtio bus registration failed"); panic("virtio bus registration failed");
return 0; return 0;
} }
static void __exit virtio_exit(void)
{
bus_unregister(&virtio_bus);
}
core_initcall(virtio_init); core_initcall(virtio_init);
module_exit(virtio_exit);
MODULE_LICENSE("GPL");

4
drivers/virtio/virtio_ring.c
View File

@ -266,6 +266,7 @@ irqreturn_t vring_interrupt(int irq, void *_vq)
return IRQ_HANDLED; return IRQ_HANDLED;
} }
EXPORT_SYMBOL_GPL(vring_interrupt);
static struct virtqueue_ops vring_vq_ops = { static struct virtqueue_ops vring_vq_ops = {
.add_buf = vring_add_buf, .add_buf = vring_add_buf,
@ -318,9 +319,12 @@ struct virtqueue *vring_new_virtqueue(unsigned int num,
return &vq->vq; return &vq->vq;
} }
EXPORT_SYMBOL_GPL(vring_new_virtqueue);
void vring_del_virtqueue(struct virtqueue *vq) void vring_del_virtqueue(struct virtqueue *vq)
{ {
kfree(to_vvq(vq)); kfree(to_vvq(vq));
} }
EXPORT_SYMBOL_GPL(vring_del_virtqueue);
MODULE_LICENSE("GPL");