Re: [patch] linux/io.h: forward declare struct pci_dev

[Christoph Hellwig <hch@infradead.org>]

On Sat, Feb 10, 2007 at 12:45:50PM +0100, Heiko Carstens wrote:
> From: Heiko Carstens <heiko.carstens@de.ibm.com>
> 
> 9ac7849e35f705830f7b016ff272b0ff1f7ff759 causes this:
> 
>   CC      arch/s390/mm/ioremap.o
> In file included from arch/s390/mm/ioremap.c:18:
> include/linux/io.h:46:
> 	warning: "struct pci_dev" declared inside parameter list
> include/linux/io.h:46:
> 	warning: its scope is only this definition or declaration,
> 		 which is probably not what you want
> 
> Guess it's time to get rid of ioremap.c on s390 if possible...
> 
> Cc: Tejun Heo <htejun@gmail.com>
> Cc: Jeff Garzik <jeff@garzik.org>
> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
> ---
>  include/linux/io.h |    1 +
>  1 files changed, 1 insertion(+)
> 
> Index: linux-2.6/include/linux/io.h
> ===================================================================
> --- linux-2.6.orig/include/linux/io.h
> +++ linux-2.6/include/linux/io.h
> @@ -22,6 +22,7 @@
>  #include <asm/io.h>
>  #include <asm/page.h>
>  
> +struct pci_dev;
>  struct device;

I haven't looked at what causes it, but any leakage of pci details
into io.h is bogus.  I'd suggest that the original submitter fixes
up that problem instead.