Merge tag 'drm-misc-next-2018-06-21' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 4.19:

UAPI Changes:
- Add writeback connector (Brian Starkey/Liviu Dudau)
- Add "content type" property to HDMI connectors (Stanislav Lisovskiy)

Cross-subsystem Changes:
- some devicetree Docs update
- fix compile breakage on ION due to the dma-buf cleanups (Christian König)

Core Changes:
- Reject over-sized allocation requests early (Chris Wilson)
- gem-fb-helper: Always do implicit sync (Daniel Vetter)
- dma-buf cleanups (Christian König)

Driver Changes:
- Fixes for the otm8009a panel driver (Philippe Cornu)
- Add Innolux TV123WAM panel driver support (Sandeep Panda)
- Move GEM BO to drm_framebuffer in few drivers (Daniel Stone)
- i915 pinning improvements (Chris Wilson)
- Stop consulting plane->fb/crtc in a few drivers (Ville Syrjälä)

Signed-off-by: Dave Airlie <airlied@redhat.com>

Link: https://patchwork.freedesktop.org/patch/msgid/20180621105428.GA20795@juma

drivers/gpu/drm/selftests/test-drm_mm.c

@@ -1825,6 +1825,77 @@ err:
 	return ret;
 }
 
+static int __igt_once(unsigned int mode)
+{
+	struct drm_mm mm;
+	struct drm_mm_node rsvd_lo, rsvd_hi, node;
+	int err;
+
+	drm_mm_init(&mm, 0, 7);
+
+	memset(&rsvd_lo, 0, sizeof(rsvd_lo));
+	rsvd_lo.start = 1;
+	rsvd_lo.size = 1;
+	err = drm_mm_reserve_node(&mm, &rsvd_lo);
+	if (err) {
+		pr_err("Could not reserve low node\n");
+		goto err;
+	}
+
+	memset(&rsvd_hi, 0, sizeof(rsvd_hi));
+	rsvd_hi.start = 5;
+	rsvd_hi.size = 1;
+	err = drm_mm_reserve_node(&mm, &rsvd_hi);
+	if (err) {
+		pr_err("Could not reserve low node\n");
+		goto err_lo;
+	}
+
+	if (!drm_mm_hole_follows(&rsvd_lo) || !drm_mm_hole_follows(&rsvd_hi)) {
+		pr_err("Expected a hole after lo and high nodes!\n");
+		err = -EINVAL;
+		goto err_hi;
+	}
+
+	memset(&node, 0, sizeof(node));
+	err = drm_mm_insert_node_generic(&mm, &node,
+					 2, 0, 0,
+					 mode | DRM_MM_INSERT_ONCE);
+	if (!err) {
+		pr_err("Unexpectedly inserted the node into the wrong hole: node.start=%llx\n",
+		       node.start);
+		err = -EINVAL;
+		goto err_node;
+	}
+
+	err = drm_mm_insert_node_generic(&mm, &node, 2, 0, 0, mode);
+	if (err) {
+		pr_err("Could not insert the node into the available hole!\n");
+		err = -EINVAL;
+		goto err_hi;
+	}
+
+err_node:
+	drm_mm_remove_node(&node);
+err_hi:
+	drm_mm_remove_node(&rsvd_hi);
+err_lo:
+	drm_mm_remove_node(&rsvd_lo);
+err:
+	drm_mm_takedown(&mm);
+	return err;
+}
+
+static int igt_lowest(void *ignored)
+{
+	return __igt_once(DRM_MM_INSERT_LOW);
+}
+
+static int igt_highest(void *ignored)
+{
+	return __igt_once(DRM_MM_INSERT_HIGH);
+}
+
 static void separate_adjacent_colors(const struct drm_mm_node *node,
 				     unsigned long color,
 				     u64 *start,