}
/**
+ * drm_minor_acquire - Acquire a DRM minor
+ * @minor_id: Minor ID of the DRM-minor
+ *
+ * Looks up the given minor-ID and returns the respective DRM-minor object. The
+ * refence-count of the underlying device is increased so you must release this
+ * object with drm_minor_release().
+ *
+ * As long as you hold this minor, it is guaranteed that the object and the
+ * minor->dev pointer will stay valid! However, the device may get unplugged and
+ * unregistered while you hold the minor.
+ *
+ * Returns:
+ * Pointer to minor-object with increased device-refcount, or PTR_ERR on
+ * failure.
+ */
+struct drm_minor *drm_minor_acquire(unsigned int minor_id)
+{
+ struct drm_minor *minor;
+
+ minor = idr_find(&drm_minors_idr, minor_id);
+ if (!minor)
+ return ERR_PTR(-ENODEV);
+
+ drm_dev_ref(minor->dev);
+ return minor;
+}
+
+/**
+ * drm_minor_release - Release DRM minor
+ * @minor: Pointer to DRM minor object
+ *
+ * Release a minor that was previously acquired via drm_minor_acquire().
+ */
+void drm_minor_release(struct drm_minor *minor)
+{
+ drm_dev_unref(minor->dev);
+}
+
+/**
* drm_put_minor - Destroy DRM minor
* @minor: Minor to destroy
*
mutex_init(&dev->struct_mutex);
mutex_init(&dev->ctxlist_mutex);
- if (drm_ht_create(&dev->map_hash, 12))
+ dev->anon_inode = drm_fs_inode_new();
+ if (IS_ERR(dev->anon_inode)) {
+ ret = PTR_ERR(dev->anon_inode);
+ DRM_ERROR("Cannot allocate anonymous inode: %d\n", ret);
goto err_free;
+ }
+
+ if (drm_ht_create(&dev->map_hash, 12))
+ goto err_inode;
ret = drm_ctxbitmap_init(dev);
if (ret) {
drm_ctxbitmap_cleanup(dev);
err_ht:
drm_ht_remove(&dev->map_hash);
+err_inode:
+ drm_fs_inode_free(dev->anon_inode);
err_free:
kfree(dev);
return NULL;
drm_ctxbitmap_cleanup(dev);
drm_ht_remove(&dev->map_hash);
+ drm_fs_inode_free(dev->anon_inode);
kfree(dev->devname);
kfree(dev);