virtio: fix virtio_config_ops description
- get_features has returned 64 bits since commit d025477368792
("virtio: add support for 64 bit features.")
- properly mark all optional callbacks
Signed-off-by: Cornelia Huck <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
Reviewed-by: Halil Pasic <[email protected]>
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 32baf8e..7087ef9 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -22,7 +22,7 @@ struct irq_affinity;
* offset: the offset of the configuration field
* buf: the buffer to read the field value from.
* len: the length of the buffer
- * @generation: config generation counter
+ * @generation: config generation counter (optional)
* vdev: the virtio_device
* Returns the config generation counter
* @get_status: read the status byte
@@ -48,17 +48,17 @@ struct irq_affinity;
* @del_vqs: free virtqueues found by find_vqs().
* @get_features: get the array of feature bits for this device.
* vdev: the virtio_device
- * Returns the first 32 feature bits (all we currently need).
+ * Returns the first 64 feature bits (all we currently need).
* @finalize_features: confirm what device features we'll be using.
* vdev: the virtio_device
* This gives the final feature bits for the device: it can change
* the dev->feature bits if it wants.
* Returns 0 on success or error status
- * @bus_name: return the bus name associated with the device
+ * @bus_name: return the bus name associated with the device (optional)
* vdev: the virtio_device
* This returns a pointer to the bus name a la pci_name from which
* the caller can then copy.
- * @set_vq_affinity: set the affinity for a virtqueue.
+ * @set_vq_affinity: set the affinity for a virtqueue (optional).
* @get_vq_affinity: get the affinity for a virtqueue (optional).
*/
typedef void vq_callback_t(struct virtqueue *);
