linux-kernel - Re: [PATCH] ata: libata depends on HAS

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Date:	Mon, 11 May 2009 20:58:40 -0400
From:	Jeff Garzik <jgarzik@...ox.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: [PATCH] ata: libata depends on HAS_DMA

Arnd Bergmann wrote:
> libata uses the DMA mapping API, so it cannot be built
> on architectures that don't have DMA support.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/ata/Kconfig |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
> index 9120717..f076268 100644
> --- a/drivers/ata/Kconfig
> +++ b/drivers/ata/Kconfig
> @@ -4,7 +4,7 @@
>  
>  menuconfig ATA
>  	tristate "Serial ATA (prod) and Parallel ATA (experimental) drivers"
> -	depends on HAS_IOMEM
> +	depends on HAS_IOMEM && HAS_DMA
>  	depends on BLOCK
>  	depends on !(M32R || M68K) || BROKEN

What specifically is breaking?

Ideally we should be able to work with PIO-only...

	JEff




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