Hi Manuel,

> > ccache gcc -D__KERNEL__ -I/home/barryn/lsx/kernels/2.4/build/linux-2.4.22-pre10-ac1/include -Wall -Wstrict-prototypes -Wno-trigraphs -Os -fno-strict-aliasing -fno-common -fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=athlon -DMODULE -DMODVERSIONS -include /home/barryn/lsx/kernels/2.4/build/linux-2.4.22-pre10-ac1/include/linux/modversions.h  -nostdinc -iwithprefix include -DKBUILD_BASENAME=firmware_class  -DEXPORT_SYMTAB -c firmware_class.c
> > firmware_class.c: In function `call_helper':
> > firmware_class.c:78: error: `hotplug_path' undeclared (first use in this function)
> > firmware_class.c:78: error: (Each undeclared identifier is reported only once
> > firmware_class.c:78: error: for each function it appears in.)
> > make[1]: *** [firmware_class.o] Error 1
> > make[1]: Leaving directory `/home/barryn/lsx/kernels/2.4/build/linux-2.4.22-pre10-ac1/lib'
> > make: *** [_mod_lib] Error 2
> [snip]
> > # CONFIG_HOTPLUG is not set
> 
>  CONFIG_HOTPLUG needs to be enabled, attached patch to make it explicit:

your patch didn't fix the problem, because it will be the same if some
internal driver needs request_firmware() and CONFIG_HOTPLUG is not set.
The call_helper() funtcion needs to be put into #idef's.

Regards

Marcel