diff options
Diffstat (limited to 'drivers/of/selftest.c')
| -rw-r--r-- | drivers/of/selftest.c | 91 |
1 files changed, 88 insertions, 3 deletions
diff --git a/drivers/of/selftest.c b/drivers/of/selftest.c index f5e8dc7a725c..37f57ad3bdbf 100644 --- a/drivers/of/selftest.c +++ b/drivers/of/selftest.c @@ -14,11 +14,17 @@ #include <linux/slab.h> #include <linux/device.h> -static bool selftest_passed = true; +#include "of_private.h" + +static struct selftest_results { + int passed; + int failed; +} selftest_results; + #define selftest(result, fmt, ...) { \ if (!(result)) { \ pr_err("FAIL %s:%i " fmt, __FILE__, __LINE__, ##__VA_ARGS__); \ - selftest_passed = false; \ + selftest_results.passed = false; \ } else { \ pr_info("pass %s:%i\n", __FILE__, __LINE__); \ } \ @@ -208,6 +214,81 @@ static void __init of_selftest_property_string(void) selftest(rc == 1 && strings[1] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n", rc, strings[1]); } +#define propcmp(p1, p2) (((p1)->length == (p2)->length) && \ + (p1)->value && (p2)->value && \ + !memcmp((p1)->value, (p2)->value, (p1)->length) && \ + !strcmp((p1)->name, (p2)->name)) +static void __init of_selftest_property_copy(void) +{ +#ifdef CONFIG_OF_DYNAMIC + struct property p1 = { .name = "p1", .length = 0, .value = "" }; + struct property p2 = { .name = "p2", .length = 5, .value = "abcd" }; + struct property *new; + + new = __of_prop_dup(&p1, GFP_KERNEL); + selftest(new && propcmp(&p1, new), "empty property didn't copy correctly\n"); + kfree(new->value); + kfree(new->name); + kfree(new); + + new = __of_prop_dup(&p2, GFP_KERNEL); + selftest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n"); + kfree(new->value); + kfree(new->name); + kfree(new); +#endif +} + +static void __init of_selftest_changeset(void) +{ +#ifdef CONFIG_OF_DYNAMIC + struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" }; + struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" }; + struct property *ppremove; + struct device_node *n1, *n2, *n21, *nremove, *parent; + struct of_changeset chgset; + + of_changeset_init(&chgset); + n1 = __of_node_dup(NULL, "/testcase-data/changeset/n1"); + selftest(n1, "testcase setup failure\n"); + n2 = __of_node_dup(NULL, "/testcase-data/changeset/n2"); + selftest(n2, "testcase setup failure\n"); + n21 = __of_node_dup(NULL, "%s/%s", "/testcase-data/changeset/n2", "n21"); + selftest(n21, "testcase setup failure %p\n", n21); + nremove = of_find_node_by_path("/testcase-data/changeset/node-remove"); + selftest(nremove, "testcase setup failure\n"); + ppadd = __of_prop_dup(&padd, GFP_KERNEL); + selftest(ppadd, "testcase setup failure\n"); + ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL); + selftest(ppupdate, "testcase setup failure\n"); + parent = nremove->parent; + n1->parent = parent; + n2->parent = parent; + n21->parent = n2; + n2->child = n21; + ppremove = of_find_property(parent, "prop-remove", NULL); + selftest(ppremove, "failed to find removal prop"); + + of_changeset_init(&chgset); + selftest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n"); + selftest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n"); + selftest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n"); + selftest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n"); + selftest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n"); + selftest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n"); + selftest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n"); + mutex_lock(&of_mutex); + selftest(!of_changeset_apply(&chgset), "apply failed\n"); + mutex_unlock(&of_mutex); + + mutex_lock(&of_mutex); + selftest(!of_changeset_revert(&chgset), "revert failed\n"); + mutex_unlock(&of_mutex); + + of_changeset_destroy(&chgset); +#endif +} + static int __init of_selftest(void) { struct device_node *np; @@ -221,8 +302,12 @@ static int __init of_selftest(void) pr_info("start of selftest - you will see error messages\n"); of_selftest_parse_phandle_with_args(); + of_selftest_property_match_string(); + of_selftest_property_copy(); + of_selftest_changeset(); of_selftest_property_string(); - pr_info("end of selftest - %s\n", selftest_passed ? "PASS" : "FAIL"); + pr_info("end of selftest - %i passed, %i failed\n", + selftest_results.passed, selftest_results.failed); return 0; } late_initcall(of_selftest); |