Re: what is the purpose of "CONFIG_DMA_IS_DMA32"?

On Mon, 27 Nov 2006, Robert P. J. Day wrote:

> 
>   perhaps a silly question, but:
> 
> $ grep -r "DMA_IS_DMA32" *
> arch/ia64/defconfig:CONFIG_DMA_IS_DMA32=y
> arch/ia64/configs/sim_defconfig:CONFIG_DMA_IS_DMA32=y
> arch/ia64/configs/zx1_defconfig:CONFIG_DMA_IS_DMA32=y
> arch/ia64/configs/tiger_defconfig:CONFIG_DMA_IS_DMA32=y
> arch/ia64/configs/bigsur_defconfig:CONFIG_DMA_IS_DMA32=y
> arch/ia64/configs/gensparse_defconfig:CONFIG_DMA_IS_DMA32=y
> $
> 
> what is the purpose of a configuration symbol that is set but never
> involved in a conditional check?
> 
>   i'm guessing that used to be a config setting in the ia64/Kconfig
> file that has since vanished.

Correct that config setting was eliminated in the 2.6.19 development 
cycle. Refreshing the config files would be advisable.
5A
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