读写状态缺少锁

[meng-plus]

读写状态是否缺少锁， 公开对外的接口，未见加锁操作

/**
 * read flash register status
 *
 * @param flash flash device
 * @param status register status
 *
 * @return result
 */
sfud_err sfud_read_status(const sfud_flash *flash, uint8_t *status) {
    uint8_t cmd = SFUD_CMD_READ_STATUS_REGISTER;

    SFUD_ASSERT(flash);
    SFUD_ASSERT(status);

    return flash->spi.wr(&flash->spi, &cmd, 1, status, 1);
}

/**
 * write status register
 *
 * @param flash flash device
 * @param is_volatile true: volatile mode, false: non-volatile mode
 * @param status register status
 *
 * @return result
 */
sfud_err sfud_write_status(const sfud_flash *flash, bool is_volatile, uint8_t status) {
    sfud_err result = SFUD_SUCCESS;
    const sfud_spi *spi = &flash->spi;
    uint8_t cmd_data[2];

    SFUD_ASSERT(flash);

    if (is_volatile) {
        cmd_data[0] = SFUD_VOLATILE_SR_WRITE_ENABLE;
        result = spi->wr(spi, cmd_data, 1, NULL, 0);
    } else {
        result = set_write_enabled(flash, true);
    }

    if (result == SFUD_SUCCESS) {
        cmd_data[0] = SFUD_CMD_WRITE_STATUS_REGISTER;
        cmd_data[1] = status;
        result = spi->wr(spi, cmd_data, 2, NULL, 0);
    }

    if (result != SFUD_SUCCESS) {
        SFUD_INFO("Error: Write_status register failed.");
    }

    return result;
}

[rinscr3003]

也许维护者可能是希望用户在有需要时自行实现这一点？毕竟并非所有应用都会需要锁，若默认用锁可能会在低性能设备上引入不必要的性能开销？