]> Git Repo - J-linux.git/blob - drivers/of/of_test.c
Merge tag 'kbuild-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy...
[J-linux.git] / drivers / of / of_test.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * KUnit tests for OF APIs
4  */
5 #include <linux/module.h>
6 #include <linux/of.h>
7
8 #include <kunit/test.h>
9
10 /*
11  * Test that the root node "/" can be found by path.
12  */
13 static void of_dtb_root_node_found_by_path(struct kunit *test)
14 {
15         struct device_node *np;
16
17         np = of_find_node_by_path("/");
18         KUNIT_EXPECT_NOT_ERR_OR_NULL(test, np);
19         of_node_put(np);
20 }
21
22 /*
23  * Test that the 'of_root' global variable is always populated when DT code is
24  * enabled. Remove this test once of_root is removed from global access.
25  */
26 static void of_dtb_root_node_populates_of_root(struct kunit *test)
27 {
28         KUNIT_EXPECT_NOT_ERR_OR_NULL(test, of_root);
29 }
30
31 static struct kunit_case of_dtb_test_cases[] = {
32         KUNIT_CASE(of_dtb_root_node_found_by_path),
33         KUNIT_CASE(of_dtb_root_node_populates_of_root),
34         {}
35 };
36
37 static int of_dtb_test_init(struct kunit *test)
38 {
39         if (!IS_ENABLED(CONFIG_OF_EARLY_FLATTREE))
40                 kunit_skip(test, "requires CONFIG_OF_EARLY_FLATTREE");
41
42         return 0;
43 }
44
45 /*
46  * Test suite to confirm a DTB is loaded.
47  */
48 static struct kunit_suite of_dtb_suite = {
49         .name = "of_dtb",
50         .test_cases = of_dtb_test_cases,
51         .init = of_dtb_test_init,
52 };
53
54 kunit_test_suites(
55         &of_dtb_suite,
56 );
57 MODULE_LICENSE("GPL");
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