[Intel-gfx] [PATCH] no-primary

[Chris Wilson]

---
 drivers/gpu/drm/drm_debugfs.c |  2 +-
 drivers/gpu/drm/drm_drv.c     | 12 ++++++++----
 drivers/gpu/drm/drm_prime.c   |  2 +-
 3 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index f8468eae0503..f7044ff82f9c 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -443,7 +443,7 @@ int drm_debugfs_connector_add(struct drm_connector *connector)
 	struct drm_minor *minor = connector->dev->primary;
 	struct dentry *root, *ent;
 
-	if (!minor->debugfs_root)
+	if (!minor || !minor->debugfs_root)
 		return -1;
 
 	root = debugfs_create_dir(connector->name, minor->debugfs_root);
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index adcb437e602d..737ad75597f1 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -688,9 +688,11 @@ int drm_dev_init(struct drm_device *dev,
 			goto err_minors;
 	}
 
-	ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
-	if (ret)
-		goto err_minors;
+	if (drm_core_check_feature(dev, DRIVER_LEGACY | DRIVER_MODESET)) {
+		ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
+		if (ret)
+			goto err_minors;
+	}
 
 	ret = drm_ht_create(&dev->map_hash, 12);
 	if (ret)
@@ -1008,7 +1010,9 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
 		 driver->name, driver->major, driver->minor,
 		 driver->patchlevel, driver->date,
 		 dev->dev ? dev_name(dev->dev) : "virtual device",
-		 dev->primary->index);
+		 dev->primary ? dev->primary->index :
+		 dev->render ? dev->render->index :
+		 -1);
 
 	goto out_unlock;
 
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index dc079efb3b0f..9e821a9c607e 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -676,7 +676,7 @@ int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
 	}
 
 	/* Used by drm_gem_mmap() to lookup the GEM object */
-	priv->minor = obj->dev->primary;
+	priv->minor = obj->dev->primary ?: obj->dev->render;
 	fil->private_data = priv;
 
 	ret = drm_vma_node_allow(&obj->vma_node, priv);
-- 
2.20.1