compile error with a source package

[Paul McDermott <paul@experimental.braille.uwo.ca>]

Hello there, I got a source package for my hp scanjet scanner and tried to
compile it.  I'm new at programming or fixing code.  I was wondering if
you could give me some pointers where to look to fix the error,  I am also
going to give you the lsm of the package that I am trying to compile.
Thanks 
Paul
LSM file
Begin3
Title:		hpscan - HP ScanJet (Plus) low level device driver
Version:	0.1.1.8
Entered-date:	09OCT95
Description:	This is a low level driver for the HP ScanJet and (hopefully)
		HP ScanJet Plus scanners. This driver should behave mostly
		like the HPSCAN device for DOS.
Keywords:	HP ScanJet HPSCAN
Author:		wingel@ctrl-c.liu.se (Christer Weinigel)
Primary-site:	ctrl-c.liu.se /unix/linux/wingel 
		hpscan-0_1_1_8_tar.gz
Alternate-site:	sunsite.unc.edu /pub/Linux/kernel/patches/scanners
		hpscan-0.1.1.8.tar.gz
Platforms:	Linux, HP ScanJet (Plus)
Copying-policy:	Freely distributable
End

Error file of output of the make file.
cc -O2 -fomit-frame-pointer -Wall -Wstrict-prototypes -D__KERNEL__ -DMODULE -DCONFIG_MODVERSIONS -DKERNEL_VERSION=\"2.1.125\"   -c hpscan.c -o hpscan.o
hpscan.c: In function `hpsj_detect':
hpscan.c:127: warning: suggest parentheses around comparison in operand of &
hpscan.c: At top level:
hpscan.c:511: redefinition of `kernel_version'
/usr/include/linux/module.h:95: `kernel_version' previously defined here
make: *** [hpscan.o] Error 1

Thanks again.