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  • opperpanterJune 24, 2011 2:48 PM PDT   
    copy_to_user() error when compiling open source AMT driver

    Hello,

     

    I downloaded the Linux AMT drivers from http://software.intel.com/en-us/articles/download-the-latest-intel-amt-open-source-drivers/#comment-61036

    The article by Jeffrey Rott.

     

    I tried to compile (make) on Debian Squeeze (2.6.32-amd64), but this fails:

     

    root@NAS2:/home/qst/mei7/mei-7.1.20# make

    cd src && make

    make[1]: Entering directory `/home/qst/mei7/mei-7.1.20/src'

    make -C /lib/modules/`uname -r`/build M=`pwd` modules

    make[2]: Entering directory `/usr/src/linux-headers-2.6.32-5-amd64'

    CC [M] /home/qst/mei7/mei-7.1.20/src/iorw.o

    /home/qst/mei7/mei-7.1.20/src/iorw.c: In function âamthi_readâ:

    /home/qst/mei7/mei-7.1.20/src/iorw.c:368: error: implicit declaration of funcn âcopy_to_userâ

    make[5]: *** [/home/qst/mei7/mei-7.1.20/src/iorw.o] Error 1

    make[4]: *** [_module_/home/qst/mei7/mei-7.1.20/src] Error 2

    make[3]: *** [sub-make] Error 2

    make[2]: *** [all] Error 2

    make[2]: Leaving directory `/usr/src/linux-headers-2.6.32-5-amd64'

    make[1]: *** [all] Error 2

    make[1]: Leaving directory `/home/qst/mei7/mei-7.1.20/src'

    make: *** [all] Error 2

    root@NAS2:/home/qst/mei7/mei-7.1.20# ls

    COPYING Makefile README src

     

    Since I am new to linux, it might be something simple.

     

    What do I need to change to fix this. Is this some compiler setting? Some kernel flag or come missing kernel library/header?

     

    The README doesn't have info about requirements, so I am not sure whether my kernel version is approprioate.

     

    Thanks!

     




    opperpanterJune 24, 2011 4:56 PM PDT
    Rate
     
    		 #1
    copy_to_user() error when compiling open source AMT driver
    Most google results told me to include a header file: 
    #include <asm/uaccess.h>
    This didn't work.
    Since the MEI/AMT driver will be part of kernel 3.0 (2.6.40), I tried to look up the source code for that:
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=drivers/staging/mei/iorw.c;h=697a2773d7cdde47f535488f592a463e1dd0e93a;hb=8eb73c6c2675f708283822bd058ad1e416836ba2
    That version of the file is newer than the one in the download offered by Intel.
    One of the differences is addition of:
    #include <linux/uaccess.h>
    Now it compiles!


    Judy Hartley (Intel)June 24, 2011 5:00 PM PDT
    Rate
     
    		 #2 Reply To #1
    copy_to_user() error when compiling open source AMT driver
    Hi opperpanter,
       I'm glad you got it figured out and I'm also glad that you posted here so other developers will be able to see the solution.

    Thanks,
    Judy

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