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Message-ID: <20110706203103.GT8286@n2100.arm.linux.org.uk>
Date: Wed, 6 Jul 2011 21:31:03 +0100
From: Russell King - ARM Linux <linux@....linux.org.uk>
To: Axel Lin <axel.lin@...il.com>
Cc: linux-kernel@...r.kernel.org,
Sergei Shtylyov <sshtylyov@...sta.com>,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: DMA: Silence declared inside parameter list
warning for !CONFIG_MMU
On Mon, Jul 04, 2011 at 04:12:21PM +0800, Axel Lin wrote:
> Fix below warning, the struct dma_coherent_area takes no space if !CONFIG_MMU.
>
> CC arch/arm/mm/dma-mapping.o
> arch/arm/mm/dma-mapping.c:309: warning: 'struct dma_coherent_area' declared inside parameter list
> arch/arm/mm/dma-mapping.c:309: warning: its scope is only this definition or declaration, which is probably not what you want
> arch/arm/mm/dma-mapping.c:334: warning: 'struct dma_coherent_area' declared inside parameter list
> arch/arm/mm/dma-mapping.c:374: warning: 'struct dma_coherent_area' declared inside parameter list
>
> Signed-off-by: Axel Lin <axel.lin@...il.com>
Ok, can you put this in the patch system please?
Thanks.
> ---
> arch/arm/mm/dma-mapping.c | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
> index 8089499..da3b33a 100644
> --- a/arch/arm/mm/dma-mapping.c
> +++ b/arch/arm/mm/dma-mapping.c
> @@ -297,6 +297,8 @@ static void dma_free_area(void *cpu_addr, size_t size, struct dma_coherent_area
> #define coherent_wc_area NULL
> #define coherent_dma_area NULL
>
> +struct dma_coherent_area { };
> +
> void dma_coherent_reserve(void)
> {
> }
> --
> 1.7.4.1
>
>
>
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