drm/udl: add vblank support

This is needed to be able to send page flip completion events.
Also while I'm at it, fix the error paths on init.

Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c
index 7094b92d1ec7..42795674bc07 100644
--- a/drivers/gpu/drm/udl/udl_main.c
+++ b/drivers/gpu/drm/udl/udl_main.c
@@ -306,10 +306,23 @@ int udl_driver_load(struct drm_device *dev, unsigned long flags)
 
         DRM_DEBUG("\n");
         ret = udl_modeset_init(dev);
+        if (ret)
+                goto err;
 
         ret = udl_fbdev_init(dev);
+        if (ret)
+                goto err;
+
+        ret = drm_vblank_init(dev, 1);
+        if (ret)
+                goto err_fb;
+
         return 0;
+err_fb:
+        udl_fbdev_cleanup(dev);
 err:
+        if (udl->urbs.count)
+                udl_free_urb_list(dev);
         kfree(udl);
         DRM_ERROR("%d\n", ret);
         return ret;
@@ -325,6 +338,8 @@ int udl_driver_unload(struct drm_device *dev)
 {
         struct udl_device *udl = dev->dev_private;
 
+        drm_vblank_cleanup(dev);
+
         if (udl->urbs.count)
                 udl_free_urb_list(dev);