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test/py: serial# cannot be overwritten on some devices
[platform/kernel/u-boot.git]
/
lib
/
tables_csum.c
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
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*/
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#include <common.h>
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#include <linux/ctype.h>
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u8 table_compute_checksum(void *v, int len)
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{
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u8 *bytes = v;
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u8 checksum = 0;
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int i;
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for (i = 0; i < len; i++)
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checksum -= bytes[i];
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return checksum;
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}