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Commit ae91ff72 authored by Grant Likely's avatar Grant Likely
Browse files

of: Add a testcase for of_find_node_by_path() 



Add a testcase for the find_node_by_path() function to make sure it
handles all the valid scenarios.

Signed-off-by: default avatarGrant Likely <grant.likely@linaro.org>
parent c22e650e

drivers/of/selftest.c

+46 −0
Original line number Diff line number Diff line
@@ -31,6 +31,51 @@ static struct selftest_results { 
	} \

}



static void __init of_selftest_find_node_by_name(void)

{

	struct device_node *np;



	np = of_find_node_by_path("/testcase-data");

	selftest(np && !strcmp("/testcase-data", np->full_name),

		"find /testcase-data failed\n");

	of_node_put(np);



	/* Test if trailing '/' works */

	np = of_find_node_by_path("/testcase-data/");

	selftest(!np, "trailing '/' on /testcase-data/ should fail\n");



	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");

	selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),

		"find /testcase-data/phandle-tests/consumer-a failed\n");

	of_node_put(np);



	np = of_find_node_by_path("testcase-alias");

	selftest(np && !strcmp("/testcase-data", np->full_name),

		"find testcase-alias failed\n");

	of_node_put(np);



	/* Test if trailing '/' works on aliases */

	np = of_find_node_by_path("testcase-alias/");

	selftest(!np, "trailing '/' on testcase-alias/ should fail\n");



	np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");

	selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),

		"find testcase-alias/phandle-tests/consumer-a failed\n");

	of_node_put(np);



	np = of_find_node_by_path("/testcase-data/missing-path");

	selftest(!np, "non-existent path returned node %s\n", np->full_name);

	of_node_put(np);



	np = of_find_node_by_path("missing-alias");

	selftest(!np, "non-existent alias returned node %s\n", np->full_name);

	of_node_put(np);



	np = of_find_node_by_path("testcase-alias/missing-path");

	selftest(!np, "non-existent alias with relative path returned node %s\n", np->full_name);

	of_node_put(np);

}



static void __init of_selftest_dynamic(void)

{

	struct device_node *np;
@@ -484,6 +529,7 @@ static int __init of_selftest(void) 
	of_node_put(np);



	pr_info("start of selftest - you will see error messages\n");

	of_selftest_find_node_by_name();

	of_selftest_dynamic();

	of_selftest_parse_phandle_with_args();

	of_selftest_property_match_string();

drivers/of/testcase-data/tests-phandle.dtsi

+5 −1
Original line number Diff line number Diff line 


/ {

	testcase-data {

	aliases {

		testcase-alias = &testcase;

	};



	testcase: testcase-data {

		security-password = "password";

		duplicate-name = "duplicate";

		duplicate-name { };