drm/nvd9/disp: bail out of mode_set_base if no fb bound to crtc

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
git-mirror · Sep 20, 2011 · 84e2ad8 · 84e2ad8
1 parent c20ab3e
commit 84e2ad8
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c
@@ -391,6 +391,11 @@ nvd0_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 	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;