--- a/arch/alpha/lib/csum_partial_copy.c~alpha-csum_partial_copyc-add-function-prototypes-from-net-checksumh +++ a/arch/alpha/lib/csum_partial_copy.c @@ -13,6 +13,7 @@ #include <linux/types.h> #include <linux/string.h> #include <linux/uaccess.h> +#include <net/checksum.h> #define ldq_u(x,y) \