compile error about do_softirq in 2.4.5-ac21

[Byeong-ryeol Kim]

I met following error while compiling 2.4.5-ac21:

I know, of course, this error was reported several times as the
compile problem of 2.4.6-preX, and there posted a patch about it
by Mr. Keith Owens. I confirmed It had been applied to
include/asm-i386/softirq.h of 2.4.5-ac21).
But I see this in 2.4.5-ac21 again, and confused so much.

I use Red Hat 7.1 (with up to latest errata updates + kernel-2.4.5-ac19,
glibc-2.2.3, gcc-2.96-88, binutils-2.11.90.0.15, etc.)
BTW, this error ocurred on both K6-II+ desktop(no-name) and Pentium III
500 MHZ noteboot(IBM ThkinPad 600X), and compiler was the same on both
machines.

Before trying to compile, I applied a patch about drivers/net/Config.in
posted to this list by Mr. Keith Owens.

Long lines were wrapped by me.

...
make[2]: Leaving directory `/usr/src/linux-2.4.5-ac21/fs/jffs'
make -C jffs2 modules
...
gcc -D__KERNEL__ -I/usr/src/linux-2.4.5-ac21/include -Wall \
   -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer \
   -fno-strict-aliasing -fno-common -pipe -mpreferred-stack-boundary=2 \
   -march=k6 -DMODULE -DMODVERSIONS \
   -include /usr/src/linux-2.4.5-ac21/include/linux/modversions.h \
   -c -o background.o background.c
background.c: In function `jffs2_garbage_collect_trigger':
background.c:57: `do_softirq_Rf0a529b7' undeclared (first use in \
                this function)
background.c:57: (Each undeclared identifier is reported only once
background.c:57: for each function it appears in.)
background.c: In function `jffs2_stop_garbage_collect_thread':
background.c:87: `do_softirq_Rf0a529b7' undeclared (first use in this \
                function)
background.c: In function `jffs2_garbage_collect_thread':
background.c:141: `do_softirq_Rf0a529b7' undeclared (first use in this \
                function)
make[2]: *** [background.o] Error 1
make[2]: Leaving directory `/usr/src/linux-2.4.5-ac21/fs/jffs2'
make[1]: *** [_modsubdir_jffs2] Error 2
make[1]: Leaving directory `/usr/src/linux-2.4.5-ac21/fs'
make: *** [_mod_fs] Error 2

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