Hi, I have used the functions copy_to_user and copy_from_user in the driver to get and send data to user space. If I comment the above statements, i dont get the errors when i insmod usb-skeleton.o which i get when i use the copy_to_user and copy _from_user functions. errors ---> Using usb-skeleton.o insmod: Relocation overflow of type 4 for __copy_user insmod: Relocation overflow of type 4 for __copy_user insmod: Relocation overflow of type 4 for __copy_user Narendra ----- Original Message ----- From: "Ralf Baechle" <ralf@xxxxxxxxxxxxxx> To: "Narendra Kulkarni" <narendra@xxxxxxxxxxx> Cc: "'Narendra Kulkarni'" <narendra@xxxxxxxxxxx>; <linux-mips@xxxxxxxxxxxxxx> Sent: Tuesday, October 26, 2004 8:34 PM Subject: Re: errors while insmoding usb-skeleton.o (changed to suit our requirements) > On Tue, Oct 26, 2004 at 08:19:14PM +0530, Narendra Kulkarni wrote: > > > I am building a module usb-skeleton.o with following compiler options (The > > complier options are same as the options of used for building kernel) > > > > opt/brcm/hndtools-mipsel-linux-3.2.3/bin/mipsel-linux-gcc -D__KERNEL__ -I/ > > usr/src/mipslinux/src/linux/linux/include -Wall -Wstrict-prototypes -Wno-tri > > graphs -O2 -fno-strict-aliasing -fno-common -fomit-frame-pointer -I/usr/src/ > > mipslinux/src/linux/linux/../../include -I/usr/src/mipslinux/src/linux/linux > > /include/asm/gcc -G > > -mno-abicalls -fno-pic -pipe -mips2 -mlong-calls -nostdinc -iwithprefix > > include -DKBUILD_BASENAME=usb-skeleton -c -o usb-skeleton.o usb-skeleton.c > > > > When insmoding the usb-skeleton.o, insmod usb-skeleton.o > > I am getting the following erros > > Using usb-skeleton.o > > insmod: Relocation overflow of type 4 for __copy_user > > insmod: Relocation overflow of type 4 for __copy_user > > insmod: Relocation overflow of type 4 for __copy_user > > > > Where am i going wrong. Help would be appreciated. > > Seems your compiler command line is missing -DMODULE. > > Ralf > >