e0125d04af
It is frequent to find variable definitions like this: ```c static const struct device *dev = DEVICE_DT_GET(...) ``` That is, module level variables that are statically initialized with a device reference. Such value is, in most cases, never changed meaning the variable can also be declared as const (immutable). This patch constifies all such cases. Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
45 lines
992 B
C
45 lines
992 B
C
/*
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* Copyright (c) 2019 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <string.h>
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#include <zephyr/drivers/entropy.h>
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#include <zephyr/logging/log.h>
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#include <openthread/platform/entropy.h>
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#include "platform-zephyr.h"
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LOG_MODULE_REGISTER(net_otPlat_entropy, CONFIG_OPENTHREAD_L2_LOG_LEVEL);
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#if !defined(CONFIG_ENTROPY_HAS_DRIVER)
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#error OpenThread requires an entropy source for a TRNG
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#endif
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static const struct device *const dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_entropy));
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otError otPlatEntropyGet(uint8_t *aOutput, uint16_t aOutputLength)
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{
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int err;
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if ((aOutput == NULL) || (aOutputLength == 0)) {
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return OT_ERROR_INVALID_ARGS;
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}
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if (!device_is_ready(dev)) {
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LOG_ERR("Entropy device not ready");
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return OT_ERROR_FAILED;
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}
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err = entropy_get_entropy(dev, aOutput, aOutputLength);
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if (err != 0) {
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LOG_ERR("Failed to obtain entropy, err %d", err);
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return OT_ERROR_FAILED;
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}
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return OT_ERROR_NONE;
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}
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