net: make ip6tunnel_xmit definition conditional

[cascardo/linux.git] / include / net / checksum.h

diff --git a/include/net/checksum.h b/include/net/checksum.h
index 9fcaedf..10a16b5 100644 (file)
--- a/include/net/checksum.h
+++ b/include/net/checksum.h
@@ -165,7 +165,8 @@ static inline __wsum remcsum_adjust(void *ptr, __wsum csum,
        csum = csum_sub(csum, csum_partial(ptr, start, 0));
 
        /* Set derived checksum in packet */
-       delta = csum_sub(csum_fold(csum), *psum);
+       delta = csum_sub((__force __wsum)csum_fold(csum),
+                        (__force __wsum)*psum);
        *psum = csum_fold(csum);
 
        return delta;