drivers/of/selftest.c - kernel/msm-5.4 - Gitiles

 /*
  * Self tests for device tree subsystem
  */

 #define pr_fmt(fmt) "### dt-test ### " fmt

 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_irq.h>
 #include <linux/list.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <linux/device.h>

 static struct selftest_results {
 	int passed;
 	int failed;
 } selftest_results;

 #define selftest(result, fmt, ...) { \
 	if (!(result)) { \
 		selftest_results.failed++; \
 		pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
 	} else { \
 		selftest_results.passed++; \
 		pr_debug("pass %s():%i\n", __func__, __LINE__); \
 	} \
 }

 static void __init of_selftest_dynamic(void)
 {
 	struct device_node *np;
 	struct property *prop;

 	np = of_find_node_by_path("/testcase-data");
 	if (!np) {
 		pr_err("missing testcase data\n");
 		return;
 	}

 	/* Array of 4 properties for the purpose of testing */
 	prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL);
 	if (!prop) {
 		selftest(0, "kzalloc() failed\n");
 		return;
 	}

 	/* Add a new property - should pass*/
 	prop->name = "new-property";
 	prop->value = "new-property-data";
 	prop->length = strlen(prop->value);
 	selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n");

 	/* Try to add an existing property - should fail */
 	prop++;
 	prop->name = "new-property";
 	prop->value = "new-property-data-should-fail";
 	prop->length = strlen(prop->value);
 	selftest(of_add_property(np, prop) != 0,
 		 "Adding an existing property should have failed\n");

 	/* Try to modify an existing property - should pass */
 	prop->value = "modify-property-data-should-pass";
 	prop->length = strlen(prop->value);
 	selftest(of_update_property(np, prop) == 0,
 		 "Updating an existing property should have passed\n");

 	/* Try to modify non-existent property - should pass*/
 	prop++;
 	prop->name = "modify-property";
 	prop->value = "modify-missing-property-data-should-pass";
 	prop->length = strlen(prop->value);
 	selftest(of_update_property(np, prop) == 0,
 		 "Updating a missing property should have passed\n");

 	/* Remove property - should pass */
 	selftest(of_remove_property(np, prop) == 0,
 		 "Removing a property should have passed\n");

 	/* Adding very large property - should pass */
 	prop++;
 	prop->name = "large-property-PAGE_SIZEx8";
 	prop->length = PAGE_SIZE * 8;
 	prop->value = kzalloc(prop->length, GFP_KERNEL);
 	selftest(prop->value != NULL, "Unable to allocate large buffer\n");
 	if (prop->value)
 		selftest(of_add_property(np, prop) == 0,
 			 "Adding a large property should have passed\n");
 }

 static void __init of_selftest_parse_phandle_with_args(void)
 {
 	struct device_node *np;
 	struct of_phandle_args args;
 	int i, rc;

 	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
 	if (!np) {
 		pr_err("missing testcase data\n");
 		return;
 	}

 	rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
 	selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);

 	for (i = 0; i < 8; i++) {
 		bool passed = true;
 		rc = of_parse_phandle_with_args(np, "phandle-list",
 						"#phandle-cells", i, &args);

 		/* Test the values from tests-phandle.dtsi */
 		switch (i) {
 		case 0:
 			passed &= !rc;
 			passed &= (args.args_count == 1);
 			passed &= (args.args[0] == (i + 1));
 			break;
 		case 1:
 			passed &= !rc;
 			passed &= (args.args_count == 2);
 			passed &= (args.args[0] == (i + 1));
 			passed &= (args.args[1] == 0);
 			break;
 		case 2:
 			passed &= (rc == -ENOENT);
 			break;
 		case 3:
 			passed &= !rc;
 			passed &= (args.args_count == 3);
 			passed &= (args.args[0] == (i + 1));
 			passed &= (args.args[1] == 4);
 			passed &= (args.args[2] == 3);
 			break;
 		case 4:
 			passed &= !rc;
 			passed &= (args.args_count == 2);
 			passed &= (args.args[0] == (i + 1));
 			passed &= (args.args[1] == 100);
 			break;
 		case 5:
 			passed &= !rc;
 			passed &= (args.args_count == 0);
 			break;
 		case 6:
 			passed &= !rc;
 			passed &= (args.args_count == 1);
 			passed &= (args.args[0] == (i + 1));
 			break;
 		case 7:
 			passed &= (rc == -ENOENT);
 			break;
 		default:
 			passed = false;
 		}

 		selftest(passed, "index %i - data error on node %s rc=%i\n",
 			 i, args.np->full_name, rc);
 	}

 	/* Check for missing list property */
 	rc = of_parse_phandle_with_args(np, "phandle-list-missing",
 					"#phandle-cells", 0, &args);
 	selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
 	rc = of_count_phandle_with_args(np, "phandle-list-missing",
 					"#phandle-cells");
 	selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);

 	/* Check for missing cells property */
 	rc = of_parse_phandle_with_args(np, "phandle-list",
 					"#phandle-cells-missing", 0, &args);
 	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
 	rc = of_count_phandle_with_args(np, "phandle-list",
 					"#phandle-cells-missing");
 	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);

 	/* Check for bad phandle in list */
 	rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
 					"#phandle-cells", 0, &args);
 	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
 	rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
 					"#phandle-cells");
 	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);

 	/* Check for incorrectly formed argument list */
 	rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
 					"#phandle-cells", 1, &args);
 	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
 	rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
 					"#phandle-cells");
 	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
 }

 static void __init of_selftest_property_match_string(void)
 {
 	struct device_node *np;
 	int rc;

 	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
 	if (!np) {
 		pr_err("No testcase data in device tree\n");
 		return;
 	}

 	rc = of_property_match_string(np, "phandle-list-names", "first");
 	selftest(rc == 0, "first expected:0 got:%i\n", rc);
 	rc = of_property_match_string(np, "phandle-list-names", "second");
 	selftest(rc == 1, "second expected:0 got:%i\n", rc);
 	rc = of_property_match_string(np, "phandle-list-names", "third");
 	selftest(rc == 2, "third expected:0 got:%i\n", rc);
 	rc = of_property_match_string(np, "phandle-list-names", "fourth");
 	selftest(rc == -ENODATA, "unmatched string; rc=%i", rc);
 	rc = of_property_match_string(np, "missing-property", "blah");
 	selftest(rc == -EINVAL, "missing property; rc=%i", rc);
 	rc = of_property_match_string(np, "empty-property", "blah");
 	selftest(rc == -ENODATA, "empty property; rc=%i", rc);
 	rc = of_property_match_string(np, "unterminated-string", "blah");
 	selftest(rc == -EILSEQ, "unterminated string; rc=%i", rc);
 }

 static void __init of_selftest_parse_interrupts(void)
 {
 	struct device_node *np;
 	struct of_phandle_args args;
 	int i, rc;

 	np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
 	if (!np) {
 		pr_err("missing testcase data\n");
 		return;
 	}

 	for (i = 0; i < 4; i++) {
 		bool passed = true;
 		args.args_count = 0;
 		rc = of_irq_parse_one(np, i, &args);

 		passed &= !rc;
 		passed &= (args.args_count == 1);
 		passed &= (args.args[0] == (i + 1));

 		selftest(passed, "index %i - data error on node %s rc=%i\n",
 			 i, args.np->full_name, rc);
 	}
 	of_node_put(np);

 	np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
 	if (!np) {
 		pr_err("missing testcase data\n");
 		return;
 	}

 	for (i = 0; i < 4; i++) {
 		bool passed = true;
 		args.args_count = 0;
 		rc = of_irq_parse_one(np, i, &args);

 		/* Test the values from tests-phandle.dtsi */
 		switch (i) {
 		case 0:
 			passed &= !rc;
 			passed &= (args.args_count == 1);
 			passed &= (args.args[0] == 9);
 			break;
 		case 1:
 			passed &= !rc;
 			passed &= (args.args_count == 3);
 			passed &= (args.args[0] == 10);
 			passed &= (args.args[1] == 11);
 			passed &= (args.args[2] == 12);
 			break;
 		case 2:
 			passed &= !rc;
 			passed &= (args.args_count == 2);
 			passed &= (args.args[0] == 13);
 			passed &= (args.args[1] == 14);
 			break;
 		case 3:
 			passed &= !rc;
 			passed &= (args.args_count == 2);
 			passed &= (args.args[0] == 15);
 			passed &= (args.args[1] == 16);
 			break;
 		default:
 			passed = false;
 		}
 		selftest(passed, "index %i - data error on node %s rc=%i\n",
 			 i, args.np->full_name, rc);
 	}
 	of_node_put(np);
 }

 static void __init of_selftest_parse_interrupts_extended(void)
 {
 	struct device_node *np;
 	struct of_phandle_args args;
 	int i, rc;

 	np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
 	if (!np) {
 		pr_err("missing testcase data\n");
 		return;
 	}

 	for (i = 0; i < 7; i++) {
 		bool passed = true;
 		rc = of_irq_parse_one(np, i, &args);

 		/* Test the values from tests-phandle.dtsi */
 		switch (i) {
 		case 0:
 			passed &= !rc;
 			passed &= (args.args_count == 1);
 			passed &= (args.args[0] == 1);
 			break;
 		case 1:
 			passed &= !rc;
 			passed &= (args.args_count == 3);
 			passed &= (args.args[0] == 2);
 			passed &= (args.args[1] == 3);
 			passed &= (args.args[2] == 4);
 			break;
 		case 2:
 			passed &= !rc;
 			passed &= (args.args_count == 2);
 			passed &= (args.args[0] == 5);
 			passed &= (args.args[1] == 6);
 			break;
 		case 3:
 			passed &= !rc;
 			passed &= (args.args_count == 1);
 			passed &= (args.args[0] == 9);
 			break;
 		case 4:
 			passed &= !rc;
 			passed &= (args.args_count == 3);
 			passed &= (args.args[0] == 10);
 			passed &= (args.args[1] == 11);
 			passed &= (args.args[2] == 12);
 			break;
 		case 5:
 			passed &= !rc;
 			passed &= (args.args_count == 2);
 			passed &= (args.args[0] == 13);
 			passed &= (args.args[1] == 14);
 			break;
 		case 6:
 			passed &= !rc;
 			passed &= (args.args_count == 1);
 			passed &= (args.args[0] == 15);
 			break;
 		default:
 			passed = false;
 		}

 		selftest(passed, "index %i - data error on node %s rc=%i\n",
 			 i, args.np->full_name, rc);
 	}
 	of_node_put(np);
 }

 static struct of_device_id match_node_table[] = {
 	{ .data = "A", .name = "name0", }, /* Name alone is lowest priority */
 	{ .data = "B", .type = "type1", }, /* followed by type alone */

 	{ .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
 	{ .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
 	{ .data = "Cc", .name = "name2", .type = "type2", },

 	{ .data = "E", .compatible = "compat3" },
 	{ .data = "G", .compatible = "compat2", },
 	{ .data = "H", .compatible = "compat2", .name = "name5", },
 	{ .data = "I", .compatible = "compat2", .type = "type1", },
 	{ .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
 	{ .data = "K", .compatible = "compat2", .name = "name9", },
 	{}
 };

 static struct {
 	const char *path;
 	const char *data;
 } match_node_tests[] = {
 	{ .path = "/testcase-data/match-node/name0", .data = "A", },
 	{ .path = "/testcase-data/match-node/name1", .data = "B", },
 	{ .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
 	{ .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
 	{ .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
 	{ .path = "/testcase-data/match-node/name3", .data = "E", },
 	{ .path = "/testcase-data/match-node/name4", .data = "G", },
 	{ .path = "/testcase-data/match-node/name5", .data = "H", },
 	{ .path = "/testcase-data/match-node/name6", .data = "G", },
 	{ .path = "/testcase-data/match-node/name7", .data = "I", },
 	{ .path = "/testcase-data/match-node/name8", .data = "J", },
 	{ .path = "/testcase-data/match-node/name9", .data = "K", },
 };

 static void __init of_selftest_match_node(void)
 {
 	struct device_node *np;
 	const struct of_device_id *match;
 	int i;

 	for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
 		np = of_find_node_by_path(match_node_tests[i].path);
 		if (!np) {
 			selftest(0, "missing testcase node %s\n",
 				match_node_tests[i].path);
 			continue;
 		}

 		match = of_match_node(match_node_table, np);
 		if (!match) {
 			selftest(0, "%s didn't match anything\n",
 				match_node_tests[i].path);
 			continue;
 		}

 		if (strcmp(match->data, match_node_tests[i].data) != 0) {
 			selftest(0, "%s got wrong match. expected %s, got %s\n",
 				match_node_tests[i].path, match_node_tests[i].data,
 				(const char *)match->data);
 			continue;
 		}
 		selftest(1, "passed");
 	}
 }

 static int __init of_selftest(void)
 {
 	struct device_node *np;

 	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
 	if (!np) {
 		pr_info("No testcase data in device tree; not running tests\n");
 		return 0;
 	}
 	of_node_put(np);

 	pr_info("start of selftest - you will see error messages\n");
 	of_selftest_dynamic();
 	of_selftest_parse_phandle_with_args();
 	of_selftest_property_match_string();
 	of_selftest_parse_interrupts();
 	of_selftest_parse_interrupts_extended();
 	of_selftest_match_node();
 	pr_info("end of selftest - %i passed, %i failed\n",
 		selftest_results.passed, selftest_results.failed);
 	return 0;
 }
 late_initcall(of_selftest);
	/*
	* Self tests for device tree subsystem
	*/

	#define pr_fmt(fmt) "### dt-test ### " fmt

	#include <linux/clk.h>
	#include <linux/err.h>
	#include <linux/errno.h>
	#include <linux/module.h>
	#include <linux/of.h>
	#include <linux/of_irq.h>
	#include <linux/list.h>
	#include <linux/mutex.h>
	#include <linux/slab.h>
	#include <linux/device.h>

	static struct selftest_results {
	int passed;
	int failed;
	} selftest_results;

	#define selftest(result, fmt, ...) { \
	if (!(result)) { \
	selftest_results.failed++; \
	pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
	} else { \
	selftest_results.passed++; \
	pr_debug("pass %s():%i\n", __func__, __LINE__); \
	} \
	}

	static void __init of_selftest_dynamic(void)
	{
	struct device_node *np;
	struct property *prop;

	np = of_find_node_by_path("/testcase-data");
	if (!np) {
	pr_err("missing testcase data\n");
	return;
	}

	/* Array of 4 properties for the purpose of testing */
	prop = kzalloc(sizeof(prop) 4, GFP_KERNEL);
	if (!prop) {
	selftest(0, "kzalloc() failed\n");
	return;
	}

	/* Add a new property - should pass*/
	prop->name = "new-property";
	prop->value = "new-property-data";
	prop->length = strlen(prop->value);
	selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n");

	/* Try to add an existing property - should fail */
	prop++;
	prop->name = "new-property";
	prop->value = "new-property-data-should-fail";
	prop->length = strlen(prop->value);
	selftest(of_add_property(np, prop) != 0,
	"Adding an existing property should have failed\n");

	/* Try to modify an existing property - should pass */
	prop->value = "modify-property-data-should-pass";
	prop->length = strlen(prop->value);
	selftest(of_update_property(np, prop) == 0,
	"Updating an existing property should have passed\n");

	/* Try to modify non-existent property - should pass*/
	prop++;
	prop->name = "modify-property";
	prop->value = "modify-missing-property-data-should-pass";
	prop->length = strlen(prop->value);
	selftest(of_update_property(np, prop) == 0,
	"Updating a missing property should have passed\n");

	/* Remove property - should pass */
	selftest(of_remove_property(np, prop) == 0,
	"Removing a property should have passed\n");

	/* Adding very large property - should pass */
	prop++;
	prop->name = "large-property-PAGE_SIZEx8";
	prop->length = PAGE_SIZE * 8;
	prop->value = kzalloc(prop->length, GFP_KERNEL);
	selftest(prop->value != NULL, "Unable to allocate large buffer\n");
	if (prop->value)
	selftest(of_add_property(np, prop) == 0,
	"Adding a large property should have passed\n");
	}

	static void __init of_selftest_parse_phandle_with_args(void)
	{
	struct device_node *np;
	struct of_phandle_args args;
	int i, rc;

	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
	if (!np) {
	pr_err("missing testcase data\n");
	return;
	}

	rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
	selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);

	for (i = 0; i < 8; i++) {
	bool passed = true;
	rc = of_parse_phandle_with_args(np, "phandle-list",
	"#phandle-cells", i, &args);

	/* Test the values from tests-phandle.dtsi */
	switch (i) {
	case 0:
	passed &= !rc;
	passed &= (args.args_count == 1);
	passed &= (args.args[0] == (i + 1));
	break;
	case 1:
	passed &= !rc;
	passed &= (args.args_count == 2);
	passed &= (args.args[0] == (i + 1));
	passed &= (args.args[1] == 0);
	break;
	case 2:
	passed &= (rc == -ENOENT);
	break;
	case 3:
	passed &= !rc;
	passed &= (args.args_count == 3);
	passed &= (args.args[0] == (i + 1));
	passed &= (args.args[1] == 4);
	passed &= (args.args[2] == 3);
	break;
	case 4:
	passed &= !rc;
	passed &= (args.args_count == 2);
	passed &= (args.args[0] == (i + 1));
	passed &= (args.args[1] == 100);
	break;
	case 5:
	passed &= !rc;
	passed &= (args.args_count == 0);
	break;
	case 6:
	passed &= !rc;
	passed &= (args.args_count == 1);
	passed &= (args.args[0] == (i + 1));
	break;
	case 7:
	passed &= (rc == -ENOENT);
	break;
	default:
	passed = false;
	}

	selftest(passed, "index %i - data error on node %s rc=%i\n",
	i, args.np->full_name, rc);
	}

	/* Check for missing list property */
	rc = of_parse_phandle_with_args(np, "phandle-list-missing",
	"#phandle-cells", 0, &args);
	selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
	rc = of_count_phandle_with_args(np, "phandle-list-missing",
	"#phandle-cells");
	selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);

	/* Check for missing cells property */
	rc = of_parse_phandle_with_args(np, "phandle-list",
	"#phandle-cells-missing", 0, &args);
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
	rc = of_count_phandle_with_args(np, "phandle-list",
	"#phandle-cells-missing");
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);

	/* Check for bad phandle in list */
	rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
	"#phandle-cells", 0, &args);
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
	rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
	"#phandle-cells");
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);

	/* Check for incorrectly formed argument list */
	rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
	"#phandle-cells", 1, &args);
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
	rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
	"#phandle-cells");
	selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
	}

	static void __init of_selftest_property_match_string(void)
	{
	struct device_node *np;
	int rc;

	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
	if (!np) {
	pr_err("No testcase data in device tree\n");
	return;
	}

	rc = of_property_match_string(np, "phandle-list-names", "first");
	selftest(rc == 0, "first expected:0 got:%i\n", rc);
	rc = of_property_match_string(np, "phandle-list-names", "second");
	selftest(rc == 1, "second expected:0 got:%i\n", rc);
	rc = of_property_match_string(np, "phandle-list-names", "third");
	selftest(rc == 2, "third expected:0 got:%i\n", rc);
	rc = of_property_match_string(np, "phandle-list-names", "fourth");
	selftest(rc == -ENODATA, "unmatched string; rc=%i", rc);
	rc = of_property_match_string(np, "missing-property", "blah");
	selftest(rc == -EINVAL, "missing property; rc=%i", rc);
	rc = of_property_match_string(np, "empty-property", "blah");
	selftest(rc == -ENODATA, "empty property; rc=%i", rc);
	rc = of_property_match_string(np, "unterminated-string", "blah");
	selftest(rc == -EILSEQ, "unterminated string; rc=%i", rc);
	}

	static void __init of_selftest_parse_interrupts(void)
	{
	struct device_node *np;
	struct of_phandle_args args;
	int i, rc;

	np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
	if (!np) {
	pr_err("missing testcase data\n");
	return;
	}

	for (i = 0; i < 4; i++) {
	bool passed = true;
	args.args_count = 0;
	rc = of_irq_parse_one(np, i, &args);

	passed &= !rc;
	passed &= (args.args_count == 1);
	passed &= (args.args[0] == (i + 1));

	selftest(passed, "index %i - data error on node %s rc=%i\n",
	i, args.np->full_name, rc);
	}
	of_node_put(np);

	np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
	if (!np) {
	pr_err("missing testcase data\n");
	return;
	}

	for (i = 0; i < 4; i++) {
	bool passed = true;
	args.args_count = 0;
	rc = of_irq_parse_one(np, i, &args);

	/* Test the values from tests-phandle.dtsi */
	switch (i) {
	case 0:
	passed &= !rc;
	passed &= (args.args_count == 1);
	passed &= (args.args[0] == 9);
	break;
	case 1:
	passed &= !rc;
	passed &= (args.args_count == 3);
	passed &= (args.args[0] == 10);
	passed &= (args.args[1] == 11);
	passed &= (args.args[2] == 12);
	break;
	case 2:
	passed &= !rc;
	passed &= (args.args_count == 2);
	passed &= (args.args[0] == 13);
	passed &= (args.args[1] == 14);
	break;
	case 3:
	passed &= !rc;
	passed &= (args.args_count == 2);
	passed &= (args.args[0] == 15);
	passed &= (args.args[1] == 16);
	break;
	default:
	passed = false;
	}
	selftest(passed, "index %i - data error on node %s rc=%i\n",
	i, args.np->full_name, rc);
	}
	of_node_put(np);
	}

	static void __init of_selftest_parse_interrupts_extended(void)
	{
	struct device_node *np;
	struct of_phandle_args args;
	int i, rc;

	np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
	if (!np) {
	pr_err("missing testcase data\n");
	return;
	}

	for (i = 0; i < 7; i++) {
	bool passed = true;
	rc = of_irq_parse_one(np, i, &args);

	/* Test the values from tests-phandle.dtsi */
	switch (i) {
	case 0:
	passed &= !rc;
	passed &= (args.args_count == 1);
	passed &= (args.args[0] == 1);
	break;
	case 1:
	passed &= !rc;
	passed &= (args.args_count == 3);
	passed &= (args.args[0] == 2);
	passed &= (args.args[1] == 3);
	passed &= (args.args[2] == 4);
	break;
	case 2:
	passed &= !rc;
	passed &= (args.args_count == 2);
	passed &= (args.args[0] == 5);
	passed &= (args.args[1] == 6);
	break;
	case 3:
	passed &= !rc;
	passed &= (args.args_count == 1);
	passed &= (args.args[0] == 9);
	break;
	case 4:
	passed &= !rc;
	passed &= (args.args_count == 3);
	passed &= (args.args[0] == 10);
	passed &= (args.args[1] == 11);
	passed &= (args.args[2] == 12);
	break;
	case 5:
	passed &= !rc;
	passed &= (args.args_count == 2);
	passed &= (args.args[0] == 13);
	passed &= (args.args[1] == 14);
	break;
	case 6:
	passed &= !rc;
	passed &= (args.args_count == 1);
	passed &= (args.args[0] == 15);
	break;
	default:
	passed = false;
	}

	selftest(passed, "index %i - data error on node %s rc=%i\n",
	i, args.np->full_name, rc);
	}
	of_node_put(np);
	}

	static struct of_device_id match_node_table[] = {
	{ .data = "A", .name = "name0", }, /* Name alone is lowest priority */
	{ .data = "B", .type = "type1", }, /* followed by type alone */

	{ .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
	{ .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
	{ .data = "Cc", .name = "name2", .type = "type2", },

	{ .data = "E", .compatible = "compat3" },
	{ .data = "G", .compatible = "compat2", },
	{ .data = "H", .compatible = "compat2", .name = "name5", },
	{ .data = "I", .compatible = "compat2", .type = "type1", },
	{ .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
	{ .data = "K", .compatible = "compat2", .name = "name9", },
	{}
	};

	static struct {
	const char *path;
	const char *data;
	} match_node_tests[] = {
	{ .path = "/testcase-data/match-node/name0", .data = "A", },
	{ .path = "/testcase-data/match-node/name1", .data = "B", },
	{ .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
	{ .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
	{ .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
	{ .path = "/testcase-data/match-node/name3", .data = "E", },
	{ .path = "/testcase-data/match-node/name4", .data = "G", },
	{ .path = "/testcase-data/match-node/name5", .data = "H", },
	{ .path = "/testcase-data/match-node/name6", .data = "G", },
	{ .path = "/testcase-data/match-node/name7", .data = "I", },
	{ .path = "/testcase-data/match-node/name8", .data = "J", },
	{ .path = "/testcase-data/match-node/name9", .data = "K", },
	};

	static void __init of_selftest_match_node(void)
	{
	struct device_node *np;
	const struct of_device_id *match;
	int i;

	for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
	np = of_find_node_by_path(match_node_tests[i].path);
	if (!np) {
	selftest(0, "missing testcase node %s\n",
	match_node_tests[i].path);
	continue;
	}

	match = of_match_node(match_node_table, np);
	if (!match) {
	selftest(0, "%s didn't match anything\n",
	match_node_tests[i].path);
	continue;
	}

	if (strcmp(match->data, match_node_tests[i].data) != 0) {
	selftest(0, "%s got wrong match. expected %s, got %s\n",
	match_node_tests[i].path, match_node_tests[i].data,
	(const char *)match->data);
	continue;
	}
	selftest(1, "passed");
	}
	}

	static int __init of_selftest(void)
	{
	struct device_node *np;

	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
	if (!np) {
	pr_info("No testcase data in device tree; not running tests\n");
	return 0;
	}
	of_node_put(np);

	pr_info("start of selftest - you will see error messages\n");
	of_selftest_dynamic();
	of_selftest_parse_phandle_with_args();
	of_selftest_property_match_string();
	of_selftest_parse_interrupts();
	of_selftest_parse_interrupts_extended();
	of_selftest_match_node();
	pr_info("end of selftest - %i passed, %i failed\n",
	selftest_results.passed, selftest_results.failed);
	return 0;
	}
	late_initcall(of_selftest);