linux-kernel - Re: [PATCH] ASoC: fsl: Fix multiple symbol definitions

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Message-ID: <20130131014214.GD2765@S2101-09.ap.freescale.net>
Date:	Thu, 31 Jan 2013 09:42:17 +0800
From:	Shawn Guo <shawn.guo@...aro.org>
To:	Thierry Reding <thierry.reding@...onic-design.de>
CC:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	<alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: fsl: Fix multiple symbol definitions

On Wed, Jan 30, 2013 at 09:24:31PM +0100, Thierry Reding wrote:
> Commit 25b8d31 (ASoC: fsl: fix multiple definition of init_module) fixed
> a build error due to multiple symbol definitions when building as a
> module. However, it causes the build to break when the driver is builtin
> because the imx-pcm.o object is included multiple times. Solve the issue
> by adding imx-pcm.o to each of the modules that require it, but only add
> it to the kernel once when one or both drivers are builtin.
> 
> Signed-off-by: Thierry Reding <thierry.reding@...onic-design.de>

Thanks, Thierry.  The Kconfig is already complex.  To avoid having them
even more complex, I have chosen to revert my patch and have a little
surgery on the code [1] to make it match the Kconfig rational.

Shawn

[1] http://thread.gmane.org/gmane.linux.alsa.devel/105018

> ---
>  sound/soc/fsl/Makefile | 21 ++++++++++++---------
>  1 file changed, 12 insertions(+), 9 deletions(-)
> 
> diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
> index ec14579..8446d49 100644
> --- a/sound/soc/fsl/Makefile
> +++ b/sound/soc/fsl/Makefile
> @@ -30,21 +30,24 @@ obj-$(CONFIG_SND_MPC52xx_SOC_EFIKA) += efika-audio-fabric.o
>  # i.MX Platform Support
>  snd-soc-imx-ssi-objs := imx-ssi.o
>  snd-soc-imx-audmux-objs := imx-audmux.o
> -snd-soc-imx-pcm-objs := imx-pcm.o
> -ifneq ($(CONFIG_SND_SOC_IMX_PCM_FIQ),)
> -	snd-soc-imx-pcm-objs += imx-pcm-fiq.o
> -endif
> -ifneq ($(CONFIG_SND_SOC_IMX_PCM_DMA),)
> -	snd-soc-imx-pcm-objs += imx-pcm-dma.o
> -endif
>  
>  obj-$(CONFIG_SND_SOC_IMX_SSI) += snd-soc-imx-ssi.o
>  obj-$(CONFIG_SND_SOC_IMX_AUDMUX) += snd-soc-imx-audmux.o
>  
>  obj-$(CONFIG_SND_SOC_IMX_PCM_FIQ) += snd-soc-imx-pcm-fiq.o
> -snd-soc-imx-pcm-fiq-y := imx-pcm-fiq.o imx-pcm.o
> +snd-soc-imx-pcm-fiq-y := imx-pcm-fiq.o
> +ifeq ($(CONFIG_SND_SOC_IMX_PCM_FIQ),m)
> +snd-soc-imx-pcm-fiq-y += imx-pcm.o
> +else
> +obj-$(CONFIG_SND_SOC_IMX_PCM_FIQ) += imx-pcm.o
> +endif
>  obj-$(CONFIG_SND_SOC_IMX_PCM_DMA) += snd-soc-imx-pcm-dma.o
> -snd-soc-imx-pcm-dma-y := imx-pcm-dma.o imx-pcm.o
> +snd-soc-imx-pcm-dma-y := imx-pcm-dma.o
> +ifeq ($(CONFIG_SND_SOC_IMX_PCM_DMA),m)
> +snd-soc-imx-pcm-dma-y := imx-pcm.o
> +else
> +obj-$(CONFIG_SND_SOC_IMX_PCM_DMA) += imx-pcm.o
> +endif
>  
>  # i.MX Machine Support
>  snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o
> -- 
> 1.8.1.2
> 

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