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of: add optional options parameter to of_find_node_by_path()

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Update of_find_node_by_path():
1) Rename function to of_find_node_opts_by_path(), adding an optional
   pointer argument. Provide a static inline wrapper version of
   of_find_node_by_path() which calls the new function with NULL as
   the optional argument.
2) Ignore any part of the path beyond and including the ':' separator.
3) Set the new provided pointer argument to the beginning of the string
   following the ':' separator.
4: Add tests.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
This commit is contained in:
Leif Lindholm 2014-11-28 11:34:28 +00:00 • committed by Grant Likely
parent 2a9d832cc9
commit 75c28c09af
3 changed files with 59 additions and 5 deletions
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30
drivers/of/unittest.c
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@ -47,6 +47,7 @@ static bool selftest_live_tree;
static void __init of_selftest_find_node_by_name(void)
{
struct device_node *np;
const char *options;
np = of_find_node_by_path("/testcase-data");
selftest(np && !strcmp("/testcase-data", np->full_name),
@ -87,6 +88,35 @@ static void __init of_selftest_find_node_by_name(void)
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);
np = of_find_node_opts_by_path("/testcase-data:testoption", &options);
selftest(np && !strcmp("testoption", options),
"option path test failed\n");
of_node_put(np);
np = of_find_node_opts_by_path("/testcase-data:testoption", NULL);
selftest(np, "NULL option path test failed\n");
of_node_put(np);
np = of_find_node_opts_by_path("testcase-alias:testaliasoption",
&options);
selftest(np && !strcmp("testaliasoption", options),
"option alias path test failed\n");
of_node_put(np);
np = of_find_node_opts_by_path("testcase-alias:testaliasoption", NULL);
selftest(np, "NULL option alias path test failed\n");
of_node_put(np);
options = "testoption";
np = of_find_node_opts_by_path("testcase-alias", &options);
selftest(np && !options, "option clearing test failed\n");
of_node_put(np);
options = "testoption";
np = of_find_node_opts_by_path("/", &options);
selftest(np && !options, "option clearing root node test failed\n");
of_node_put(np);
}
static void __init of_selftest_dynamic(void)