busy_loop in compile kernel 2.5.68-mm2

Hi:

I have problems when compile kernel 2.5.68-mm2 the message is:

make -f scripts/Makefile.build obj=net/unix
make -f scripts/Makefile.build obj=net/xfrm
make -f scripts/Makefile.build obj=lib
make -f scripts/Makefile.build obj=arch/i386/lib

  GEN     .version
  CHK     include/linux/compile.h
  UPD     include/linux/compile.h

gcc -Wp,-MD,init/.version.o.d -D__KERNEL__ -Iinclude -Wall
-Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -pipe -mpreferred-stack-boundary=2 -march=pentium3 -Iinclude/asm-i386/mach-default
-nostdinc -iwithprefix include -DKBUILD_BASENAME=version
-DKBUILD_MODNAME=version -c -o init/version.o init/version.c
ld -m elf_i386 -r -o init/built-in.o init/main.o init/version.o
init/mounts.o init/initramfs.o

        ld -m elf_i386  -T arch/i386/vmlinux.lds.s arch/i386/kernel/head.o

arch/i386/kernel/init_task.o init/built-in.o --start-group usr/built-in.o
arch/i386/kernel/built-in.o arch/i386/mm/built-in.o arch/i386/mach-default/built-in.o kernel/built-in.o mm/built-in.o fs/built-in.o ipc/built-in.o security/built-in.o crypto/built-in.o lib/lib.a arch/i386/lib/lib.a drivers/built-in.o sound/built-in.o arch/i386/pci/built-in.o net/built-in.o --end-group -o .tmp_vmlinux1 drivers/built-in.o(.text+0x9d70b): In function `busy_loop':
: undefined reference to save_flags' drivers/built-in.o(.text+0x9d710): In function busy_loop':
: undefined reference to sti' drivers/built-in.o(.text+0x9d72d): In function busy_loop':
: undefined reference to `restore_flags'
make: *** [.tmp_vmlinux1] Error 1

Help me please

Regards

[...]

You have an SMP-unsafe driver configured.
A little birdy called grep(1) told me:

$ grep -nr busy_loop drivers           
drivers/net/pcmcia/xirc2ps_cs.c:443:busy_loop(u_long len)
drivers/net/pcmcia/xirc2ps_cs.c:1788:    busy_loop(HZ/25);                   /* wait 40 msec */
drivers/net/pcmcia/xirc2ps_cs.c:1793:    busy_loop(HZ/50);                   /* wait 20 msec */
drivers/net/pcmcia/xirc2ps_cs.c:1807:    busy_loop(HZ/50);                   /* wait 20 msec */
drivers/net/pcmcia/xirc2ps_cs.c:1809:    busy_loop(HZ/25);                   /* wait 40 msec */
drivers/net/pcmcia/xirc2ps_cs.c:1820:    busy_loop(HZ/2);               /* about 500ms */
drivers/net/pcmcia/xirc2ps_cs.c:1839:    busy_loop(HZ/25);                   /* wait 40 msec to let it complete */
drivers/net/pcmcia/xirc2ps_cs.c:1898:       busy_loop(HZ/50);
drivers/net/pcmcia/xirc2ps_cs.c:1907:       busy_loop(HZ/25);   /* wait 40 msec to let it complete */
drivers/net/pcmcia/xirc2ps_cs.c:2000:       busy_loop(HZ/10);    /* wait 100 msec */

-- wli