drm/i915: remove crtc disabling special case

Originally this has been introduced in

commit 6eebd6bb5f1ea04f04019e5c39f87a0f17ffb472
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Mon Nov 28 21:10:05 2011 +0000

    drm: Fix lack of CRTC disable for drm_crtc_helper_set_config(.fb=NULL)

With the improvements of the output state staging and no longer
overwriting crtc->fb before the hw state is updated we can now handle
crtc disabling as part of the normal modeset sequence.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 9ce8c59..0f2c2e1 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6585,30 +6585,6 @@ static bool intel_encoder_crtc_ok(struct drm_encoder *encoder,
        return false;
 }
 
-static int
-intel_crtc_helper_disable(struct drm_crtc *crtc)
-{
-       struct drm_device *dev = crtc->dev;
-       struct drm_connector *connector;
-       struct drm_encoder *encoder;
-
-       /* Decouple all encoders and their attached connectors from this crtc */
-       list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
-               if (encoder->crtc != crtc)
-                       continue;
-
-               list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-                       if (connector->encoder != encoder)
-                               continue;
-
-                       connector->encoder = NULL;
-               }
-       }
-
-       drm_helper_disable_unused_functions(dev);
-       return 0;
-}
-
 static void
 intel_crtc_prepare_encoders(struct drm_device *dev)
 {
@@ -6996,7 +6972,6 @@ static int intel_crtc_set_config(struct drm_mode_set *set)
                                (int)set->num_connectors, set->x, set->y);
        } else {
                DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
-               return intel_crtc_helper_disable(set->crtc);
        }
 
        dev = set->crtc->dev;