1 files changed, 51 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 000000000000..8dc79861758a
--- /dev/null
+++ b/lib/of-reconfig-notifier-error-inject.c
@@ -0,0 +1,51 @@
+#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>");