2.5.47-bk4 compile failure, due to crypto

[Helge Hafting]

I get this, even if I de-selects all the crypto stuff.
Helge Hafting

make -f scripts/Makefile.build obj=net/core
  gcc -Wp,-MD,net/core/.skbuff.o.d -D__KERNEL__ -Iinclude -Wall
-Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer
-fno-strict-aliasing -fno-common -pipe -mpreferred-stack-boundary=2
-march=i686 -Iarch/i386/mach-generic -nostdinc -iwithprefix include   
-DKBUILD_BASENAME=skbuff -DKBUILD_MODNAME=skbuff   -c -o
net/core/skbuff.o net/core/skbuff.c
In file included from include/net/xfrm.h:6,
                 from net/core/skbuff.c:61:
include/linux/crypto.h: In function `crypto_tfm_alg_modname':
include/linux/crypto.h:202: dereferencing pointer to incomplete type
include/linux/crypto.h:205: warning: control reaches end of non-void
function
make[2]: *** [net/core/skbuff.o] Error 1
make[1]: *** [net/core] Error 2
make: *** [net] Error 2