1 files changed, 52 insertions, 0 deletions

diff --git a/arch/score/lib/checksum_copy.c b/arch/score/lib/checksum_copy.c
new file mode 100644
index 000000000000..04565dd3ded8
--- /dev/null
+++ b/arch/score/lib/checksum_copy.c
@@ -0,0 +1,52 @@
+/*
+ * arch/score/lib/csum_partial_copy.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Lennox Wu <lennox.wu@sunplusct.com>
+ *  Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <net/checksum.h>
+
+#include <asm/uaccess.h>
+
+unsigned int csum_partial_copy(const char *src, char *dst,
+                                int len, unsigned int sum)
+{
+        sum = csum_partial(src, len, sum);
+        memcpy(dst, src, len);
+
+        return sum;
+}
+
+unsigned int csum_partial_copy_from_user(const char *src, char *dst,
+                                        int len, unsigned int sum,
+                                        int *err_ptr)
+{
+        int missing;
+
+        missing = copy_from_user(dst, src, len);
+        if (missing) {
+                memset(dst + len - missing, 0, missing);
+                *err_ptr = -EFAULT;
+        }
+
+        return csum_partial(dst, len, sum);
+}