linux-kernel - Re: [PATCH] Staging: most: MOST and MOSTCORE should depend on HAS

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Date:	Mon, 7 Sep 2015 11:00:57 +0200
From:	Christian Gromm <christian.gromm@...rochip.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
CC:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<devel@...verdev.osuosl.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Staging: most: MOST and MOSTCORE should depend on
 HAS_DMA

On Tue, 1 Sep 2015 22:05:58 +0200
Geert Uytterhoeven <geert@...ux-m68k.org> wrote:

> If NO_DMA=y:
> 
>     ERROR: "dma_free_coherent" [drivers/staging/most/mostcore/mostcore.ko] undefined!
>     ERROR: "dma_alloc_coherent" [drivers/staging/most/mostcore/mostcore.ko] undefined!
> 
> As all MOST sub drivers use DMA functionality, add a dependency on
> HAS_DMA to MOSTCORE, and to MOST, which selects MOSTCORE.
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
Acked-by: Christian Gromm <christian.gromm@...rochip.com>
> ---
>  drivers/staging/most/Kconfig          | 1 +
>  drivers/staging/most/mostcore/Kconfig | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/drivers/staging/most/Kconfig b/drivers/staging/most/Kconfig
> index d50de03de7b98972..0b9b9b539f70562d 100644
> --- a/drivers/staging/most/Kconfig
> +++ b/drivers/staging/most/Kconfig
> @@ -1,5 +1,6 @@
>  menuconfig MOST
>          tristate "MOST driver"
> +	depends on HAS_DMA
>          select MOSTCORE
>          default n
>          ---help---
> diff --git a/drivers/staging/most/mostcore/Kconfig b/drivers/staging/most/mostcore/Kconfig
> index 38abf1b21b6623c7..47172546d7280ee6 100644
> --- a/drivers/staging/most/mostcore/Kconfig
> +++ b/drivers/staging/most/mostcore/Kconfig
> @@ -4,6 +4,7 @@
>  
>  config MOSTCORE
>  	tristate "MOST Core"
> +	depends on HAS_DMA
>  
>  	---help---
>  	  Say Y here if you want to enable MOST support.

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