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1// SPDX-License-Identifier: GPL-2.02/*3 * KUnit tests for OF APIs4 */5#include <linux/module.h>6#include <linux/of.h>7 8#include <kunit/test.h>9 10#include "of_private.h"11 12/*13 * Test that the root node "/" can be found by path.14 */15static void of_dtb_root_node_found_by_path(struct kunit *test)16{17 struct device_node *np;18 19 np = of_find_node_by_path("/");20 KUNIT_EXPECT_NOT_ERR_OR_NULL(test, np);21 of_node_put(np);22}23 24/*25 * Test that the 'of_root' global variable is always populated when DT code is26 * enabled. Remove this test once of_root is removed from global access.27 */28static void of_dtb_root_node_populates_of_root(struct kunit *test)29{30 KUNIT_EXPECT_NOT_ERR_OR_NULL(test, of_root);31}32 33static struct kunit_case of_dtb_test_cases[] = {34 KUNIT_CASE(of_dtb_root_node_found_by_path),35 KUNIT_CASE(of_dtb_root_node_populates_of_root),36 {}37};38 39static int of_dtb_test_init(struct kunit *test)40{41 of_root_kunit_skip(test);42 if (!IS_ENABLED(CONFIG_OF_EARLY_FLATTREE))43 kunit_skip(test, "requires CONFIG_OF_EARLY_FLATTREE");44 45 return 0;46}47 48/*49 * Test suite to confirm a DTB is loaded.50 */51static struct kunit_suite of_dtb_suite = {52 .name = "of_dtb",53 .test_cases = of_dtb_test_cases,54 .init = of_dtb_test_init,55};56 57kunit_test_suites(58 &of_dtb_suite,59);60MODULE_DESCRIPTION("KUnit tests for OF APIs");61MODULE_LICENSE("GPL");62