Re: [PATCH v3] ASoC: atmel: ATMEL drivers don't need HAS_DMA

From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Randy Dunlap <rdunlap@infradead.org>
Cc: linux-kernel@vger.kernel.org,
	"Codrin Ciubotariu" <codrin.ciubotariu@microchip.com>,
	alsa-devel@alsa-project.org,
	"Liam Girdwood" <lgirdwood@gmail.com>,
	"Mark Brown" <broonie@kernel.org>,
	"Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Subject: Re: [PATCH v3] ASoC: atmel: ATMEL drivers don't need HAS_DMA
Date: Wed, 7 Jul 2021 23:59:16 +0200	[thread overview]
Message-ID: <YOYjtE5R2ApV4N9F@piout.net> (raw)
In-Reply-To: <20210707214752.3831-1-rdunlap@infradead.org>

On 07/07/2021 14:47:52-0700, Randy Dunlap wrote:
> On a config (such as arch/sh/) which does not set HAS_DMA when MMU
> is not set, several ATMEL ASoC drivers select symbols that cause
> kconfig warnings. There is one "depends on HAS_DMA" which is no longer
> needed. Dropping it eliminates the kconfig warnings and still builds
> with no problems reported.
> 
> Fix the following kconfig warnings:
> 
> WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC
>   Depends on [n]: SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && SND_ATMEL_SOC [=m] && HAS_DMA [=n]
>   Selected by [m]:
>   - SND_ATMEL_SOC_SSC [=m] && SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && SND_ATMEL_SOC [=m]
>   - SND_ATMEL_SOC_SSC_PDC [=m] && SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && SND_ATMEL_SOC [=m] && ATMEL_SSC [=m]
> 
> WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_SSC_PDC
>   Depends on [n]: SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && SND_ATMEL_SOC [=m] && ATMEL_SSC [=m] && HAS_DMA [=n]
>   Selected by [m]:
>   - SND_AT91_SOC_SAM9G20_WM8731 [=m] && SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && SND_ATMEL_SOC [=m] && (ARCH_AT91 || COMPILE_TEST [=y]) && ATMEL_SSC [=m] && SND_SOC_I2C_AND_SPI [=m]
> 
> WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_SSC
>   Depends on [n]: SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && SND_ATMEL_SOC [=m] && HAS_DMA [=n]
>   Selected by [m]:
>   - SND_ATMEL_SOC_SSC_DMA [=m] && SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && SND_ATMEL_SOC [=m] && ATMEL_SSC [=m]
> 
> WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_SSC_DMA
>   Depends on [n]: SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && SND_ATMEL_SOC [=m] && ATMEL_SSC [=m] && HAS_DMA [=n]
>   Selected by [m]:
>   - SND_ATMEL_SOC_WM8904 [=m] && SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && SND_ATMEL_SOC [=m] && (ARCH_AT91 || COMPILE_TEST [=y]) && ATMEL_SSC [=m] && I2C [=m]
>   - SND_AT91_SOC_SAM9X5_WM8731 [=m] && SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && SND_ATMEL_SOC [=m] && (ARCH_AT91 || COMPILE_TEST [=y]) && ATMEL_SSC [=m] && SND_SOC_I2C_AND_SPI [=m]
> 
> Fixes: 3951e4aae2ce ("ASoC: atmel-pcm: dma support based on pcm dmaengine")
> Fixes: 18291410557f ("ASoC: atmel: enable SOC_SSC_PDC and SOC_SSC_DMA in Kconfig")
> Fixes: 061981ff8cc8 ("ASoC: atmel: properly select dma driver state")
> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
> Cc: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
> Cc: alsa-devel@alsa-project.org
> Cc: Liam Girdwood <lgirdwood@gmail.com>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Michał Mirosław <mirq-linux@rere.qmqm.pl>
> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>

Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

> ---
> v2: rebase & resend;
>     drop Cc: to Bo Shen <voice.shen@atmel.com> # bounced
> v3: drop "depends on HAS_DMA" (as suggested by Codrin; Thanks)
> 
> ---
>  sound/soc/atmel/Kconfig |    1 -
>  1 file changed, 1 deletion(-)
> 
> --- linux-next-20210707.orig/sound/soc/atmel/Kconfig
> +++ linux-next-20210707/sound/soc/atmel/Kconfig
> @@ -11,7 +11,6 @@ if SND_ATMEL_SOC
>  
>  config SND_ATMEL_SOC_PDC
>  	bool
> -	depends on HAS_DMA
>  
>  config SND_ATMEL_SOC_DMA
>  	bool

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com