1 files changed, 52 insertions, 0 deletions
diff --git a/lib/of-reconfig-notifier-error-inject.c b/lib/of-reconfig-notifier-error-inject.c
new file mode 100644
index 000000000..b26f16402
--- /dev/null
+++ b/lib/of-reconfig-notifier-error-inject.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#include "notifier-error-inject.h"
+
+static int priority;
+module_param(priority, int, 0);
+MODULE_PARM_DESC(priority, "specify OF reconfig notifier priority");
+
+static struct notifier_err_inject reconfig_err_inject = {
+	.actions = {
+		{ NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_ATTACH_NODE) },
+		{ NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_DETACH_NODE) },
+		{ NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_ADD_PROPERTY) },
+		{ NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_REMOVE_PROPERTY) },
+		{ NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_UPDATE_PROPERTY) },
+		{}
+	}
+};
+
+static struct dentry *dir;
+
+static int err_inject_init(void)
+{
+	int err;
+
+	dir = notifier_err_inject_init("OF-reconfig",
+		notifier_err_inject_dir, &reconfig_err_inject, priority);
+	if (IS_ERR(dir))
+		return PTR_ERR(dir);
+
+	err = of_reconfig_notifier_register(&reconfig_err_inject.nb);
+	if (err)
+		debugfs_remove_recursive(dir);
+
+	return err;
+}
+
+static void err_inject_exit(void)
+{
+	of_reconfig_notifier_unregister(&reconfig_err_inject.nb);
+	debugfs_remove_recursive(dir);
+}
+
+module_init(err_inject_init);
+module_exit(err_inject_exit);
+
+MODULE_DESCRIPTION("OF reconfig notifier error injection module");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");