virtio: drop legacy_only driver flag

legacy_only flag is now unused, drop it from core.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>

diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index e1673a5..f226658 100644 (file)
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -198,10 +198,6 @@ static int virtio_dev_probe(struct device *_d)
                driver_features_legacy = driver_features;
        }
 
-       /* Detect legacy-only drivers and disable VIRTIO_F_VERSION_1. */
-       if (drv->legacy_only)
-               device_features &= ~(1ULL << VIRTIO_F_VERSION_1);
-
        if (device_features & (1ULL << VIRTIO_F_VERSION_1))
                dev->features = driver_features & device_features;
        else

diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index d666bcb..d09e093 100644 (file)
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -134,7 +134,6 @@ int virtio_device_restore(struct virtio_device *dev);
  * @feature_table_size: number of entries in the feature table array.
  * @feature_table_legacy: same as feature_table but when working in legacy mode.
  * @feature_table_size_legacy: number of entries in feature table legacy array.
- * @legacy_only: driver does not support virtio 1.0.
  * @probe: the function to call when a device is found.  Returns 0 or -errno.
  * @remove: the function to call when a device is removed.
  * @config_changed: optional function to call when the device configuration
@@ -147,7 +146,6 @@ struct virtio_driver {
        unsigned int feature_table_size;
        const unsigned int *feature_table_legacy;
        unsigned int feature_table_size_legacy;
-       bool legacy_only;
        int (*probe)(struct virtio_device *dev);
        void (*scan)(struct virtio_device *dev);
        void (*remove)(struct virtio_device *dev);