All the encoder_helper_funcs are optional, and even setting the
drm_encoder_helper_funcs vtable itself is optional and may be left out
when not using any of the helper funcs, so lets drop all of this.

Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
 drivers/staging/vboxvideo/vbox_mode.c | 34 ---------------------------
 1 file changed, 34 deletions(-)

diff --git a/drivers/staging/vboxvideo/vbox_mode.c 
b/drivers/staging/vboxvideo/vbox_mode.c
index 4f5d28aeca95..babb02a1ebf2 100644
--- a/drivers/staging/vboxvideo/vbox_mode.c
+++ b/drivers/staging/vboxvideo/vbox_mode.c
@@ -466,39 +466,6 @@ static const struct drm_encoder_funcs vbox_enc_funcs = {
        .destroy = vbox_encoder_destroy,
 };
 
-static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
-{
-}
-
-static bool vbox_mode_fixup(struct drm_encoder *encoder,
-                           const struct drm_display_mode *mode,
-                           struct drm_display_mode *adjusted_mode)
-{
-       return true;
-}
-
-static void vbox_encoder_mode_set(struct drm_encoder *encoder,
-                                 struct drm_display_mode *mode,
-                                 struct drm_display_mode *adjusted_mode)
-{
-}
-
-static void vbox_encoder_prepare(struct drm_encoder *encoder)
-{
-}
-
-static void vbox_encoder_commit(struct drm_encoder *encoder)
-{
-}
-
-static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
-       .dpms = vbox_encoder_dpms,
-       .mode_fixup = vbox_mode_fixup,
-       .prepare = vbox_encoder_prepare,
-       .commit = vbox_encoder_commit,
-       .mode_set = vbox_encoder_mode_set,
-};
-
 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev,
                                             unsigned int i)
 {
@@ -510,7 +477,6 @@ static struct drm_encoder *vbox_encoder_init(struct 
drm_device *dev,
 
        drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
                         DRM_MODE_ENCODER_DAC, NULL);
-       drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
 
        vbox_encoder->base.possible_crtcs = 1 << i;
        return &vbox_encoder->base;
-- 
2.19.0

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