net: Allow csum_add to be provided in arch

[firefly-linux-kernel-4.4.55.git] / include / net / checksum.h

diff --git a/include/net/checksum.h b/include/net/checksum.h
index a28f4e0f625193b0682932207a46578f094f52a9..87cb1903640d63ccfed890c957294af46a93cf24 100644 (file)
--- a/include/net/checksum.h
+++ b/include/net/checksum.h
@@ -57,12 +57,14 @@ static __inline__ __wsum csum_and_copy_to_user
 }
 #endif
 
+#ifndef HAVE_ARCH_CSUM_ADD
 static inline __wsum csum_add(__wsum csum, __wsum addend)
 {
        u32 res = (__force u32)csum;
        res += (__force u32)addend;
        return (__force __wsum)(res + (res < (__force u32)addend));
 }
+#endif
 
 static inline __wsum csum_sub(__wsum csum, __wsum addend)
 {