linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Self tests for device tree subsystem

 */

​

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

​

#include <linux/memblock.h>

#include <linux/clk.h>

#include <linux/err.h>

#include <linux/errno.h>

#include <linux/hashtable.h>

#include <linux/libfdt.h>

#include <linux/of.h>

#include <linux/of_fdt.h>

#include <linux/of_irq.h>

#include <linux/of_platform.h>

#include <linux/list.h>

#include <linux/mutex.h>

#include <linux/slab.h>

#include <linux/device.h>

#include <linux/platform_device.h>

​

#include <linux/i2c.h>

#include <linux/i2c-mux.h>

​

#include <linux/bitops.h>

​

#include "of_private.h"

​

static struct unittest_results {

    int passed;

    int failed;

} unittest_results;

​

#define unittest(result, fmt, ...) ({ \

    bool failed = !(result); \

    if (failed) { \

        unittest_results.failed++; \

        pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \

    } else { \

        unittest_results.passed++; \

        pr_debug("pass %s():%i\n", __func__, __LINE__); \

    } \

    failed; \

})

​

static void __init of_unittest_find_node_by_name(void)

{

    struct device_node *np;

    const char *options, *name;

​

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

    name = kasprintf(GFP_KERNEL, "%pOF", np);

    unittest(np && !strcmp("/testcase-data", name),

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

    of_node_put(np);

    kfree(name);

​

    /* Test if trailing '/' works */

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

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

​