[PATCH v3 13/14] vdpa: factor out vhost_vdpa_last_dev

[Eugenio Pérez]

From: Si-Wei Liu <si-wei....@oracle.com>

Generalize duplicated condition check for the last vq of vdpa
device to a common function.

This is used in next patches.

Signed-off-by: Si-Wei Liu <si-wei....@oracle.com>
Reviewed-by: Eugenio Pérez <epere...@redhat.com>
---
v3: Cherry-picked from Si-Wei's series
---
 hw/virtio/vhost-vdpa.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 61553ad196..a846abccb0 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -557,6 +557,11 @@ static bool vhost_vdpa_first_dev(struct vhost_dev *dev)
     return v->index == 0;
 }
 
+static bool vhost_vdpa_last_dev(struct vhost_dev *dev)
+{
+    return dev->vq_index + dev->nvqs == dev->vq_index_end;
+}
+
 static int vhost_vdpa_get_dev_features(struct vhost_dev *dev,
                                        uint64_t *features)
 {
@@ -1317,7 +1322,7 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev, 
bool started)
         vhost_vdpa_host_notifiers_uninit(dev, dev->nvqs);
     }
 
-    if (dev->vq_index + dev->nvqs != dev->vq_index_end) {
+    if (!vhost_vdpa_last_dev(dev)) {
         return 0;
     }
 
@@ -1339,7 +1344,7 @@ static void vhost_vdpa_reset_status(struct vhost_dev *dev)
 {
     struct vhost_vdpa *v = dev->opaque;
 
-    if (dev->vq_index + dev->nvqs != dev->vq_index_end) {
+    if (!vhost_vdpa_last_dev(dev)) {
         return;
     }
 
-- 
2.39.3