datapath: Fix build with Centos 5.3 kernel.

[cascardo/ovs.git] / datapath / linux-2.6 / compat-2.6 / include / net / checksum.h

diff --git a/datapath/linux-2.6/compat-2.6/include/net/checksum.h b/datapath/linux-2.6/compat-2.6/include/net/checksum.h
index c64c6bd..3b6debb 100644 (file)
--- a/datapath/linux-2.6/compat-2.6/include/net/checksum.h
+++ b/datapath/linux-2.6/compat-2.6/include/net/checksum.h
@@ -3,14 +3,11 @@
 
 #include_next <net/checksum.h>
 
-#include <linux/version.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
-
+#ifndef HAVE_CSUM_UNFOLD
 static inline __wsum csum_unfold(__sum16 n)
 {
        return (__force __wsum)n;
 }
-
-#endif /* linux kernel < 2.6.20 */
+#endif /* !HAVE_CSUM_UNFOLD */
 
 #endif /* checksum.h */