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Commit c6fd4701 authored by Rusty Russell's avatar Rusty Russell
Browse files

virtio: Allow virtio to be modular and used by modules 



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

Signed-off-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent 15f9c890

drivers/virtio/Kconfig

+2 −2
Original line number Diff line number Diff line 
# Virtio always gets selected by whoever wants it.

config VIRTIO

	bool

	tristate



# Similarly the virtio ring implementation.

config VIRTIO_RING

	bool

	tristate

	depends on VIRTIO

drivers/virtio/virtio.c

+8 −0
Original line number Diff line number Diff line
@@ -162,4 +162,12 @@ static int virtio_init(void) 
		panic("virtio bus registration failed");

	return 0;

}



static void __exit virtio_exit(void)

{

	bus_unregister(&virtio_bus);

}

core_initcall(virtio_init);

module_exit(virtio_exit);



MODULE_LICENSE("GPL");

drivers/virtio/virtio_ring.c

+4 −0
Original line number Diff line number Diff line
@@ -266,6 +266,7 @@ irqreturn_t vring_interrupt(int irq, void *_vq) 


	return IRQ_HANDLED;

}

EXPORT_SYMBOL_GPL(vring_interrupt);



static struct virtqueue_ops vring_vq_ops = {

	.add_buf = vring_add_buf,
@@ -318,9 +319,12 @@ struct virtqueue *vring_new_virtqueue(unsigned int num, 


	return &vq->vq;

}

EXPORT_SYMBOL_GPL(vring_new_virtqueue);



void vring_del_virtqueue(struct virtqueue *vq)

{

	kfree(to_vvq(vq));

}

EXPORT_SYMBOL_GPL(vring_del_virtqueue);



MODULE_LICENSE("GPL");