fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / arch / ia64 / lib / csum_partial_copy.c

diff --git a/arch/ia64/lib/csum_partial_copy.c b/arch/ia64/lib/csum_partial_copy.c
index 36866e8..503dfe6 100644 (file)
--- a/arch/ia64/lib/csum_partial_copy.c
+++ b/arch/ia64/lib/csum_partial_copy.c
@@ -104,9 +104,9 @@ out:
  */
 extern unsigned long do_csum(const unsigned char *, long);
 
-static unsigned int
-do_csum_partial_copy_from_user (const unsigned char __user *src, unsigned char *dst,
-                               int len, unsigned int psum, int *errp)
+__wsum
+csum_partial_copy_from_user(const void __user *src, void *dst,
+                               int len, __wsum psum, int *errp)
 {
        unsigned long result;
 
@@ -122,30 +122,17 @@ do_csum_partial_copy_from_user (const unsigned char __user *src, unsigned char *
        result = do_csum(dst, len);
 
        /* add in old sum, and carry.. */
-       result += psum;
+       result += (__force u32)psum;
        /* 32+c bits -> 32 bits */
        result = (result & 0xffffffff) + (result >> 32);
-       return result;
-}
-
-unsigned int
-csum_partial_copy_from_user (const unsigned char __user *src, unsigned char *dst,
-                            int len, unsigned int sum, int *errp)
-{
-       if (!access_ok(VERIFY_READ, src, len)) {
-               *errp = -EFAULT;
-               memset(dst, 0, len);
-               return sum;
-       }
-
-       return do_csum_partial_copy_from_user(src, dst, len, sum, errp);
+       return (__force __wsum)result;
 }
 
-unsigned int
-csum_partial_copy_nocheck(const unsigned char __user *src, unsigned char *dst,
-                         int len, unsigned int sum)
+__wsum
+csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
 {
-       return do_csum_partial_copy_from_user(src, dst, len, sum, NULL);
+       return csum_partial_copy_from_user((__force const void __user *)src,
+                                          dst, len, sum, NULL);
 }
 
 EXPORT_SYMBOL(csum_partial_copy_nocheck);