linux-kernel - Re: [PATCH] dma-coherent: export dma_[alloc|release]_from

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Message-ID: <20080820112858.GY14993@amd.com>
Date:	Wed, 20 Aug 2008 13:28:59 +0200
From:	Joerg Roedel <joerg.roedel@....com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Jesse Barnes <jbarnes@...tuousgeek.org>, mingo@...hat.com,
	tglx@...utronix.de, hpa@...or.com, linux-kernel@...r.kernel.org,
	iommu@...ts.linux-foundation.org, muli@...ibm.com
Subject: Re: [PATCH] dma-coherent: export dma_[alloc|release]_from_coherent methods

On Wed, Aug 20, 2008 at 12:18:11PM +0200, Ingo Molnar wrote:
> 
> From ed0a6445788eed1fa836442730d8fe8ab1086629 Mon Sep 17 00:00:00 2001
> From: Ingo Molnar <mingo@...e.hu>
> Date: Wed, 20 Aug 2008 12:16:09 +0200
> Subject: [PATCH] dma-coherent: export dma_[alloc|release]_from_coherent methods
> 
> fixes modular builds:
> 
>   ERROR: "dma_alloc_from_coherent" [sound/core/snd-page-alloc.ko] undefined!
>   ERROR: "dma_release_from_coherent" [sound/core/snd-page-alloc.ko] undefined!
> 
> Signed-off-by: Ingo Molnar <mingo@...e.hu>
> ---
>  kernel/dma-coherent.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/kernel/dma-coherent.c b/kernel/dma-coherent.c
> index c1d4d5b..f013a0c 100644
> --- a/kernel/dma-coherent.c
> +++ b/kernel/dma-coherent.c
> @@ -124,6 +124,7 @@ int dma_alloc_from_coherent(struct device *dev, ssize_t size,
>  	}
>  	return (mem != NULL);
>  }
> +EXPORT_SYMBOL(dma_alloc_from_coherent);
>  
>  /**
>   * dma_release_from_coherent() - try to free the memory allocated from per-device coherent memory pool
> @@ -151,3 +152,4 @@ int dma_release_from_coherent(struct device *dev, int order, void *vaddr)
>  	}
>  	return 0;
>  }
> +EXPORT_SYMBOL(dma_release_from_coherent);

Hmm, weird. I should have found this with the allmodconfig build test.
Anyway, thanks for the fix.

Joerg

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