Error compiling fdc as a module in -current

===> fdc (all)
cc -O -pipe -march=pentium4
-I/usr/src/sys/modules/fdc/../../contrib/dev/acpica -D_KERNEL
-DKLD_MODULE -nostdinc -I- 
-I/usr/src/sys/modules/fdc/../../contrib/dev/acpica -include
/usr/obj/usr/src/sys/CHIHIRO/opt_global.h -I. -I_at_ -I_at_/contrib/altq
-I_at_/../include -finline-limit=8000 -fno-common -g
-I/usr/obj/usr/src/sys/CHIHIRO -mno-align-long-strings
-mpreferred-stack-boundary=2 -ffreestanding -Wall -Wredundant-decls
-Wnested-externs -Wstrict-prototypes  -Wmissing-prototypes
-Wpointer-arith -Winline -Wcast-qual  -fformat-extensions -std=c99
-Wsystem-headers -Werror -Wall -Wno-format-y2k -Wno-uninitialized -c
/usr/src/sys/modules/fdc/../../dev/fdc/fdc.c
/usr/src/sys/modules/fdc/../../dev/fdc/fdc.c: In function `fdc_add_child':
/usr/src/sys/modules/fdc/../../dev/fdc/fdc.c:1685: warning: unused
variable `flags'
*** Error code 1

Stop in /usr/src/sys/modules/fdc.
*** Error code 1

Stop in /usr/src/sys/modules.
*** Error code 1

Stop in /usr/obj/usr/src/sys/CHIHIRO.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.

-- 
"Without the userland, the kernel is useless."
               --inspired by The Tao of Programming