[PATCH] hw/virtio: Have virtio_bus_get_vdev_bad_features() return 64-bit value

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

In commit 019a3edbb25 ("virtio: make features 64bit wide") we
increased the 'features' field to 64-bit, but forgot to update
the virtio_bus_get_vdev_bad_features() helper. The 'bad features'
are truncated to 32-bit. The virtio_net_bad_features() handler
from the virtio-net devices is potentially affected.

Have the virtio_bus_get_vdev_bad_features() helper return the
full 64-bit value.

Cc: qemu-stable@nongnu.org
Fixes: 019a3edbb25 ("virtio: make features 64bit wide")
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 include/hw/virtio/virtio-bus.h | 2 +-
 hw/virtio/virtio-bus.c         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h
index ef8abe49c5a..f9955ff577a 100644
--- a/include/hw/virtio/virtio-bus.h
+++ b/include/hw/virtio/virtio-bus.h
@@ -122,7 +122,7 @@ uint16_t virtio_bus_get_vdev_id(VirtioBusState *bus);
 /* Get the config_len field of the plugged device. */
 size_t virtio_bus_get_vdev_config_len(VirtioBusState *bus);
 /* Get bad features of the plugged device. */
-uint32_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus);
+uint64_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus);
 /* Get config of the plugged device. */
 void virtio_bus_get_vdev_config(VirtioBusState *bus, uint8_t *config);
 /* Set config of the plugged device. */
diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c
index 859978d2487..25a2b68a234 100644
--- a/hw/virtio/virtio-bus.c
+++ b/hw/virtio/virtio-bus.c
@@ -134,7 +134,7 @@ size_t virtio_bus_get_vdev_config_len(VirtioBusState *bus)
 }
 
 /* Get bad features of the plugged device. */
-uint32_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus)
+uint64_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus)
 {
     VirtIODevice *vdev = virtio_bus_get_device(bus);
     VirtioDeviceClass *k;
-- 
2.26.3