linux-kernel - Re: [PATCH 2/2] ARM: only build ssi-fiq.S et al if CONFIG_SND_IMX_SOC_PCM

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Date:	Wed, 8 Aug 2012 08:52:41 +0200
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Matt Sealey <matt@...esi-usa.com>
Cc:	Linux ARM Kernel Mailing List 
	<linux-arm-kernel@...ts.infradead.org>,
	Steev Klimaszewski <steev@...esi-usa.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Shawn Guo <shawn.guo@...aro.org>,
	Dave Martin <dave.martin@...aro.org>,
	Anton Vorontsov <anton.vorontsov@...aro.org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Sascha Hauer <kernel@...gutronix.de>
Subject: Re: [PATCH 2/2] ARM: only build ssi-fiq.S et al if
 CONFIG_SND_IMX_SOC_PCM_FIQ is selected

On Tue, Aug 07, 2012 at 05:45:14PM -0500, Matt Sealey wrote:
> Further to the previous patch, a custom configuration may be used based on the
> imx_v6_v7_defconfig which removes the board depending on the audio driver pulling
> this support code. However, since it is built dependent on CONFIG_SND_IMX_SOC
> it is enabled in the build for all i.MX processors which enable any audio drivers.
> 
> Correct this by only building the SSI FIQ support code when the more specific
> CONFIG_SND_IMX_SOC_PCM_FIQ is enabled. Since it's enabled in the imx_v6_v7_defconfig
> anyway by the Eukrea board, nothing changes using the defconfig, so this is just
> a convenience for people reconfiguring their kernels more sparsely than the default.
> 
> Signed-off-by: Matt Sealey <matt@...esi-usa.com>
> Acked-by: Shawn Guo <shawn.guo@...aro.org>
> ---
>  arch/arm/plat-mxc/Makefile |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/plat-mxc/Makefile b/arch/arm/plat-mxc/Makefile
> index 6ac7200..89927f5 100644
> --- a/arch/arm/plat-mxc/Makefile
> +++ b/arch/arm/plat-mxc/Makefile
> @@ -16,7 +16,7 @@ obj-$(CONFIG_MXC_USE_EPIT) += epit.o
>  obj-$(CONFIG_MXC_DEBUG_BOARD) += 3ds_debugboard.o
>  obj-$(CONFIG_CPU_FREQ_IMX)    += cpufreq.o
>  obj-$(CONFIG_CPU_IDLE) += cpuidle.o
> -ifdef CONFIG_SND_IMX_SOC
> +ifdef CONFIG_SND_IMX_SOC_PCM_FIQ
>  obj-y += ssi-fiq.o
>  obj-y += ssi-fiq-ksym.o
>  endif

Since you are here already, better do:

obj-$(CONFIG_SND_IMX_SOC_PCM_FIQ) +) += ssi-fiq.o ssi-fiq-ksym.o

Sascha

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