nfs: __setup_str_nfs_root_setup causes a section type conflict

While compiling v2.6.31-rc4-294-gf5886c7 for parisc (64-bits) I ran into 
the following compilation error:

/home/fjp/projects/kernel/linux-2.6/fs/nfs/nfsroot.c:403:
    error: __setup_str_nfs_root_setup causes a section type conflict
make[7]: *** [fs/nfs/nfsroot.o] Error 1

Cheers,
FJP

#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.31-rc4
# Fri Jul 31 14:37:41 2009
#
CONFIG_PARISC=y
CONFIG_MMU=y
CONFIG_STACK_GROWSUP=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_TIME=y
CONFIG_TIME_LOW_RES=y
CONFIG_GENERIC_HARDIRQS=y