linux-kernel - Re: [PATCH Resend 1/1] mfd: davinci_voicecodec: Convert to use devm

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Message-ID: <20130618084017.GA7161@zurbaran>
Date:	Tue, 18 Jun 2013 10:40:17 +0200
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	Sachin Kamat <sachin.kamat@...aro.org>
Cc:	linux-kernel@...r.kernel.org, lee.jones@...aro.org,
	Miguel Aguilar <miguel.aguilar@...gerun.com>
Subject: Re: [PATCH Resend 1/1] mfd: davinci_voicecodec: Convert to use
 devm_* APIs

Hi Sachin,

On Wed, Jun 12, 2013 at 01:49:42PM +0530, Sachin Kamat wrote:
> devm_* APIs are device managed and make code simpler.
> 
> Signed-off-by: Sachin Kamat <sachin.kamat@...aro.org>
> Cc: Miguel Aguilar <miguel.aguilar@...gerun.com>
> ---
> CC'd Lee Jones
>  
> Patch is based on mfd-next tree and compile tested.
> This driver gives following compilation error (not introduced by this patch):
> drivers/mfd/davinci_voicecodec.c:86:3: error: implicit declaration
> of function ‘io_v2p’ [-Werror=implicit-function-declaration]
>    (dma_addr_t)(io_v2p(davinci_vc->base) + DAVINCI_VC_WFIFO);
> 
> In order to test my changes I added the following to davinci_voicecodec.h file:
> +#define IO_OFFSET      0xfd000000 /* Virtual IO = 0xfec00000 */
> +#define io_v2p(va)     ((va) - IO_OFFSET)
> 
> I am not sure if these changes are right fix for the above error.
io_v2p is define in davinci's mach/hardware.h so I believe this is what
you should include in davinci_voicecodec.h.

Cheers,
Samuel.

-- 
Intel Open Source Technology Centre
http://oss.intel.com/
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