drm/nvd9/disp: bail out of mode_set_base if no fb bound to crtc
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c
index 20072fb7..23d63b4 100644
--- a/drivers/gpu/drm/nouveau/nvd0_display.c
+++ b/drivers/gpu/drm/nouveau/nvd0_display.c
@@ -391,6 +391,11 @@
struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
int ret;
+ if (!crtc->fb) {
+ NV_DEBUG_KMS(crtc->dev, "No FB bound\n");
+ return 0;
+ }
+
ret = nvd0_crtc_swap_fbs(crtc, old_fb);
if (ret)
return ret;