Re: [PATCH] (-mm) drivers/pci/msi: explicit declaration of msi_register

From: Andrew Morton <akpm_at_osdl.org>
Date: 2006-03-15 08:45:35
"Jun'ichi Nomura" <j-nomura@ce.jp.nec.com> wrote:
>
> Declare msi_register() in msi.h.
> 
> The patch is especially necessary for ia64 on which most of files
> emit compiler warnings like below:
>   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,

I wonder why I didn't get that.  Need a better ia64 config I guess.

> Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
> 
> --- linux-2.6.16-rc6-mm1.orig/include/asm-ia64/msi.h	2006-03-14 13:54:11.000000000 -0500
> +++ linux-2.6.16-rc6-mm1/include/asm-ia64/msi.h	2006-03-14 14:05:26.000000000 -0500
> @@ -15,6 +15,7 @@ static inline void set_intr_gate (int nr
>  #define MSI_TARGET_CPU_SHIFT	4
>  
>  extern struct msi_ops msi_apic_ops;
> +extern int msi_register(struct msi_ops *);
>  
>  /* default ia64 msi init routine */
>  static inline int ia64_msi_init(void)

The offending patch is gregkh-pci-msi-vector-targeting-abstractions.patch.

That patch already adds a declaration for msi_register(), in
drivers/pci/pci.h.  We don't want to add a duplicated declaration like
this.

One option might be to create inclued/linux/msi.h, put this declaration in
there then include <asm/msi.h>.  Possibly some other declarations should be
moved into linux/msi.h as well.
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Received on Wed Mar 15 08:45:19 2006

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