virtio-gpu: fix ui idx check

Fix off-by-one value check (0 is the first scanout).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 1463653560-26958-7-git-send-email-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index bc10d5ddc07ee09d57759c9e61ce5789c6dd6aac..f3b0f1419ed4a28e0dd74b60bbd4a66b10e4255d 100644 (file)
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -879,7 +879,7 @@ static int virtio_gpu_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info)
 {
     VirtIOGPU *g = opaque;
 
-    if (idx > g->conf.max_outputs) {
+    if (idx >= g->conf.max_outputs) {
         return -1;
     }