MIPS: SB1250: Include correct header and fix a warning
[linux-2.6/linux-mips.git] / arch / score / lib / checksum_copy.c
blob04565dd3ded84734fac2e864b1e50f35292c1b91
1 /*
2 * arch/score/lib/csum_partial_copy.c
4 * Score Processor version.
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
26 #include <net/checksum.h>
28 #include <asm/uaccess.h>
30 unsigned int csum_partial_copy(const char *src, char *dst,
31 int len, unsigned int sum)
33 sum = csum_partial(src, len, sum);
34 memcpy(dst, src, len);
36 return sum;
39 unsigned int csum_partial_copy_from_user(const char *src, char *dst,
40 int len, unsigned int sum,
41 int *err_ptr)
43 int missing;
45 missing = copy_from_user(dst, src, len);
46 if (missing) {
47 memset(dst + len - missing, 0, missing);
48 *err_ptr = -EFAULT;
51 return csum_partial(dst, len, sum);