[PATCH v4 2/2] virtio-pci: Add check the return of kvm_virtio_pci_vector_use_one

[Cindy Lu]

Add the return value check for kvm_virtio_pci_vector_use_one().
Since the return value of function virtio_pci_set_vector() is void,
we can do nothing here. So just add the error message here.

Signed-off-by: Cindy Lu <lulu@redhat.com>
---
 hw/virtio/virtio-pci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 6b62165ef6..dc31a37ec0 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1455,7 +1455,9 @@ static void virtio_pci_set_vector(VirtIODevice *vdev,
     }
     /* If the new vector changed need to set it up. */
     if (kvm_irqfd && new_vector != VIRTIO_NO_VECTOR) {
-        kvm_virtio_pci_vector_use_one(proxy, queue_no);
+        if (kvm_virtio_pci_vector_use_one(proxy, queue_no)) {
+            virtio_error(vdev, "fail to set the vector %d", new_vector);
+        }
     }
 }
 
-- 
2.45.0