drm/nouveau/kms: never call drm_helper_disable_unused_functions() with atomic

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index 4192b79267693501e7f3861f1033dc374baba94c..cc8c5833798158dbbc1db3d9566979f8c3bfe08c 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -535,7 +535,8 @@ nouveau_fbcon_init(struct drm_device *dev)
                preferred_bpp = 32;
 
        /* disable all the possible outputs/crtcs before entering KMS mode */
-       drm_helper_disable_unused_functions(dev);
+       if (!dev->mode_config.funcs->atomic_commit)
+               drm_helper_disable_unused_functions(dev);
 
        ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
        if (ret)