DRM: UDL: get rid of useless vblank initialization

UDL doesn't support vblank functionality so we don't need to
initialize vblank here (we are able to send page flip
completion events even without vblank initialization)

Moreover current drm_vblank_init call with num_crtcs > 0 causes
sending DRM_EVENT_FLIP_COMPLETE event with zero timestamp every
time. This breaks userspace apps (for example weston) which
relies on timestamp value.

Cc: stable@vger.kernel.org
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180928144126.21598-1-Eugeniy.Paltsev@synopsys.com

diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c
index f455f095a14685d234569eaed56121d6269393b1..1b014d92855b93991b17911b1fe40e823585dba1 100644 (file)
--- a/drivers/gpu/drm/udl/udl_main.c
+++ b/drivers/gpu/drm/udl/udl_main.c
@@ -350,15 +350,10 @@ int udl_driver_load(struct drm_device *dev, unsigned long flags)
        if (ret)
                goto err;
 
-       ret = drm_vblank_init(dev, 1);
-       if (ret)
-               goto err_fb;
-
        drm_kms_helper_poll_init(dev);
 
        return 0;
-err_fb:
-       udl_fbdev_cleanup(dev);
+
 err:
        if (udl->urbs.count)
                udl_free_urb_list(dev);