linux-kernel - Re: [PATCH][RESEND] lib/genalloc: add a helper function for DMA buffer allocation

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Message-Id: <20131031142619.d7aed35fe536f5a177012d27@linux-foundation.org>
Date:	Thu, 31 Oct 2013 14:26:19 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Nicolin Chen <b42378@...escale.com>
Cc:	<joe@...ches.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH][RESEND] lib/genalloc: add a helper function for DMA
 buffer allocation

On Thu, 31 Oct 2013 17:16:07 +0800 Nicolin Chen <b42378@...escale.com> wrote:

> When using pool space for DMA buffer, there might be duplicated calling
> of gen_pool_alloc() and gen_pool_virt_to_phys() in each implementation.
> 
> Thus it's better to add a simple helper function, a compatible one to
> the common dma_alloc_coherent(), to save some code.
> 

Well OK, but this new function doesn't have any callers.  So it
increases kernel size and is untestable.

Do you have any conversion patches which we can merge to address these
problems?

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