[PATCH 2/3] hw/display/virtio-gpu: Avoid mmap() for empty blob

Calling mmap() for an empty blob will result in EINVAL and emits a
spurious warning.

Signed-off-by: Akihiko Odaki <[email protected]>
---
 hw/display/virtio-gpu-udmabuf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/display/virtio-gpu-udmabuf.c b/hw/display/virtio-gpu-udmabuf.c
index 5f08c855dde1..0377a9bcb406 100644
--- a/hw/display/virtio-gpu-udmabuf.c
+++ b/hw/display/virtio-gpu-udmabuf.c
@@ -136,7 +136,7 @@ void virtio_gpu_init_udmabuf(struct virtio_gpu_simple_resource *res)
     if (res->iov_cnt == 1 &&
         res->iov[0].iov_len < 4096) {
         pdata = res->iov[0].iov_base;
-    } else {
+    } else if (res->blob_size) {
         virtio_gpu_create_udmabuf(res);
         if (res->dmabuf_fd < 0) {
             return;

-- 
2.55.0