1 files changed, 5 insertions, 1 deletions

diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 50db245c81ad..f364bbf63c34 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -15,6 +15,10 @@
 /* We've given up on this device. */
 #define VIRTIO_CONFIG_S_FAILED          0x80
 
+/* Do we get callbacks when the ring is completely used, even if we've
+ * suppressed them? */
+#define VIRTIO_F_NOTIFY_ON_EMPTY        24
+
 #ifdef __KERNEL__
 #include <linux/virtio.h>
 
@@ -99,7 +103,7 @@ static inline bool virtio_has_feature(const struct virtio_device *vdev,
  * The return value is -ENOENT if the feature doesn't exist.  Otherwise
  * the config value is copied into whatever is pointed to by v. */
 #define virtio_config_val(vdev, fbit, offset, v) \
-        virtio_config_buf((vdev), (fbit), (offset), (v), sizeof(v))
+        virtio_config_buf((vdev), (fbit), (offset), (v), sizeof(*v))
 
 static inline int virtio_config_buf(struct virtio_device *vdev,
                                     unsigned int fbit,