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    SubjectRe: [PATCH] (-mm) drivers/pci/msi: explicit declaration of msi_register
    On Tue, Mar 14, 2006 at 06:55:55PM -0500, Jun'ichi Nomura wrote:
    > Adrian Bunk wrote:
    > >>include2/asm/msi.h: In function `ia64_msi_init':
    > >>include2/asm/msi.h:23: warning: implicit declaration of function
    > >>`msi_register'
    > >>In file included from include2/asm/machvec.h:408,
    > >> from include2/asm/io.h:70,
    > >> from include2/asm/smp.h:20,
    > >> from /build/rc6/source/include/linux/smp.h:22,
    > >>...
    > >
    > >To avoid any wrong impression:
    > >
    > >This kind of warnings isn't harmless.
    > >
    > >gcc tries to guess the prototype of the function, and if gcc guessed
    > >wrong this can cause nasty and hard to debug runtime errors.
    > Sure.
    > But for this case, gcc emits the above warning for any files
    > which includes, for example, include/linux/smp.h on ia64.
    > So while the warning is harmless, it may cause other harmful
    > warnings being overlooked.

    Yes, this should be cleaned up. I'll take a look.

    I thought though that we had all of this compiling cleanly ... guess not.

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