drm/i915: Remove DRIVER_MODESET checks from modeset code

Mostly just checks in i915-private modeset ioctls.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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 93f1ff0..ca6a240 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12394,9 +12394,6 @@
 	struct drm_crtc *drmmode_crtc;
 	struct intel_crtc *crtc;
 
-	if (!drm_core_check_feature(dev, DRIVER_MODESET))
-		return -ENODEV;
-
 	drmmode_crtc = drm_crtc_find(dev, pipe_from_crtc_id->crtc_id);
 
 	if (!drmmode_crtc) {
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index d8de1d5..71e87ab 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -744,10 +744,8 @@
 		return;
 
 	if (opregion->acpi) {
-		if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-			intel_didl_outputs(dev);
-			intel_setup_cadls(dev);
-		}
+		intel_didl_outputs(dev);
+		intel_setup_cadls(dev);
 
 		/* Notify BIOS we are ready to handle ACPI video ext notifs.
 		 * Right now, all the events are handled by the ACPI video module.
diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c
index f93dfc1..823d1d9 100644
--- a/drivers/gpu/drm/i915/intel_overlay.c
+++ b/drivers/gpu/drm/i915/intel_overlay.c
@@ -1065,7 +1065,6 @@
 	struct put_image_params *params;
 	int ret;
 
-	/* No need to check for DRIVER_MODESET - we don't set it up then. */
 	overlay = dev_priv->overlay;
 	if (!overlay) {
 		DRM_DEBUG("userspace bug: no overlay\n");
@@ -1261,7 +1260,6 @@
 	struct overlay_registers __iomem *regs;
 	int ret;
 
-	/* No need to check for DRIVER_MODESET - we don't set it up then. */
 	overlay = dev_priv->overlay;
 	if (!overlay) {
 		DRM_DEBUG("userspace bug: no overlay\n");
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 5ae56ecb..f0b06c0 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1301,9 +1301,6 @@
 	struct intel_plane *intel_plane;
 	int ret = 0;
 
-	if (!drm_core_check_feature(dev, DRIVER_MODESET))
-		return -ENODEV;
-
 	/* Make sure we don't try to enable both src & dest simultaneously */
 	if ((set->flags & (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE)) == (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE))
 		return -EINVAL;
@@ -1332,9 +1329,6 @@
 	struct intel_plane *intel_plane;
 	int ret = 0;
 
-	if (!drm_core_check_feature(dev, DRIVER_MODESET))
-		return -ENODEV;
-
 	drm_modeset_lock_all(dev);
 
 	plane = drm_plane_find(dev, get->plane_id);