[NET]: PARISC checksum annotations and cleanups.

* sanitized prototypes, annotated
* kill shift-by-16 in checksum calculation

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 7 deletions

diff --git a/arch/parisc/lib/checksum.c b/arch/parisc/lib/checksum.c
index 8a1e08068e7d..462696d30d3b 100644
--- a/arch/parisc/lib/checksum.c
+++ b/arch/parisc/lib/checksum.c
@@ -101,11 +101,14 @@ out:
 /*
  * computes a partial checksum, e.g. for TCP/UDP fragments
  */
-unsigned int csum_partial(const unsigned char *buff, int len, unsigned int sum)
+/*
+ * why bother folding?
+ */
+__wsum csum_partial(const void *buff, int len, __wsum sum)
 {
         unsigned int result = do_csum(buff, len);
         addc(result, sum);
-        return from32to16(result);
+        return (__force __wsum)from32to16(result);
 }
 
 EXPORT_SYMBOL(csum_partial);
@@ -113,8 +116,8 @@ EXPORT_SYMBOL(csum_partial);
 /*
  * copy while checksumming, otherwise like csum_partial
  */
-unsigned int csum_partial_copy_nocheck(const unsigned char *src, unsigned char *dst,
-                                       int len, unsigned int sum)
+__wsum csum_partial_copy_nocheck(const void *src, void *dst,
+                                       int len, __wsum sum)
 {
         /*
          * It's 2:30 am and I don't feel like doing it real ...
@@ -131,9 +134,9 @@ EXPORT_SYMBOL(csum_partial_copy_nocheck);
  * Copy from userspace and compute checksum.  If we catch an exception
  * then zero the rest of the buffer.
  */
-unsigned int csum_partial_copy_from_user(const unsigned char __user *src,
-                                        unsigned char *dst, int len,
-                                        unsigned int sum, int *err_ptr)
+__wsum csum_partial_copy_from_user(const void __user *src,
+                                        void *dst, int len,
+                                        __wsum sum, int *err_ptr)
 {
         int missing;