1 files changed, 0 insertions, 141 deletions
diff --git a/arch/ia64/lib/csum_partial_copy.c b/arch/ia64/lib/csum_partial_copy.c
deleted file mode 100644
index bf9396b1ed32..000000000000
--- a/arch/ia64/lib/csum_partial_copy.c
+++ /dev/null
@@ -1,141 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Network Checksum & Copy routine
- *
- * Copyright (C) 1999, 2003-2004 Hewlett-Packard Co
- *	Stephane Eranian <eranian@hpl.hp.com>
- *
- * Most of the code has been imported from Linux/Alpha
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/string.h>
-
-#include <linux/uaccess.h>
-
-/*
- * XXX Fixme: those 2 inlines are meant for debugging and will go away
- */
-static inline unsigned
-short from64to16(unsigned long x)
-{
-	/* add up 32-bit words for 33 bits */
-	x = (x & 0xffffffff) + (x >> 32);
-	/* add up 16-bit and 17-bit words for 17+c bits */
-	x = (x & 0xffff) + (x >> 16);
-	/* add up 16-bit and 2-bit for 16+c bit */
-	x = (x & 0xffff) + (x >> 16);
-	/* add up carry.. */
-	x = (x & 0xffff) + (x >> 16);
-	return x;
-}
-
-static inline
-unsigned long do_csum_c(const unsigned char * buff, int len, unsigned int psum)
-{
-	int odd, count;
-	unsigned long result = (unsigned long)psum;
-
-	if (len <= 0)
-		goto out;
-	odd = 1 & (unsigned long) buff;
-	if (odd) {
-		result = *buff << 8;
-		len--;
-		buff++;
-	}
-	count = len >> 1;		/* nr of 16-bit words.. */
-	if (count) {
-		if (2 & (unsigned long) buff) {
-			result += *(unsigned short *) buff;
-			count--;
-			len -= 2;
-			buff += 2;
-		}
-		count >>= 1;		/* nr of 32-bit words.. */
-		if (count) {
-			if (4 & (unsigned long) buff) {
-				result += *(unsigned int *) buff;
-				count--;
-				len -= 4;
-				buff += 4;
-			}
-			count >>= 1;	/* nr of 64-bit words.. */
-			if (count) {
-				unsigned long carry = 0;
-				do {
-					unsigned long w = *(unsigned long *) buff;
-					count--;
-					buff += 8;
-					result += carry;
-					result += w;
-					carry = (w > result);
-				} while (count);
-				result += carry;
-				result = (result & 0xffffffff) + (result >> 32);
-			}
-			if (len & 4) {
-				result += *(unsigned int *) buff;
-				buff += 4;
-			}
-		}
-		if (len & 2) {
-			result += *(unsigned short *) buff;
-			buff += 2;
-		}
-	}
-	if (len & 1)
-		result += *buff;
-
-	result = from64to16(result);
-
-	if (odd)
-		result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
-
-out:
-	return result;
-}
-
-/*
- * XXX Fixme
- *
- * This is very ugly but temporary. THIS NEEDS SERIOUS ENHANCEMENTS.
- * But it's very tricky to get right even in C.
- */
-extern unsigned long do_csum(const unsigned char *, long);
-
-__wsum
-csum_partial_copy_from_user(const void __user *src, void *dst,
-				int len, __wsum psum, int *errp)
-{
-	unsigned long result;
-
-	/* XXX Fixme
-	 * for now we separate the copy from checksum for obvious
-	 * alignment difficulties. Look at the Alpha code and you'll be
-	 * scared.
-	 */
-
-	if (__copy_from_user(dst, src, len) != 0 && errp)
-		*errp = -EFAULT;
-
-	result = do_csum(dst, len);
-
-	/* add in old sum, and carry.. */
-	result += (__force u32)psum;
-	/* 32+c bits -> 32 bits */
-	result = (result & 0xffffffff) + (result >> 32);
-	return (__force __wsum)result;
-}
-
-EXPORT_SYMBOL(csum_partial_copy_from_user);
-
-__wsum
-csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
-{
-	return csum_partial_copy_from_user((__force const void __user *)src,
-					   dst, len, sum, NULL);
-}
-
-EXPORT_SYMBOL(csum_partial_copy_nocheck);