Re: [PATCH 1/2] powerpc: Make isa_mem_base common to 32 and 64 bits

[Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>]

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On Tue, 13 Nov 2007, Benjamin Herrenschmidt wrote:
> This defines isa_mem_base on both 32 and 64 bits (it used to be 32 bits
> only). This avoids a few ifdef's in later patches and potentially can
> allow support for VGA text mode on 64 bits powerpc.
> 
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---
> 
> Small cleanup pre-requisite for my next patch
> 
>  arch/powerpc/kernel/pci-common.c |    4 ++++
>  arch/powerpc/kernel/pci_32.c     |    1 -
>  include/asm-powerpc/io.h         |    5 +++--
>  3 files changed, 7 insertions(+), 3 deletions(-)
> 
> Index: linux-work/arch/powerpc/kernel/pci-common.c
> ===================================================================
> --- linux-work.orig/arch/powerpc/kernel/pci-common.c	2007-11-13 14:11:11.000000000 +1100
> +++ linux-work/arch/powerpc/kernel/pci-common.c	2007-11-13 14:15:43.000000000 +1100
> @@ -52,6 +52,10 @@ int global_phb_number;		/* Global phb co
>  
>  extern struct list_head hose_list;
>  
> +/* ISA Memory physical address (or 0 if none) */
                                   ^^^^^^^^^^^^
> +resource_size_t isa_mem_base    = 0;

Let's hope this doesn't confuse too many people, as 0 is the valid value on
legacy PC hardware ;-)

With kind regards,
 
Geert Uytterhoeven
Software Architect

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