Re: [PATCH 4.19 114/191] ASoC: atmel: fix build error with CONFIG_SND_ATMEL_SOC_DMA=m
From: Pavel Machek
Date: Fri Feb 21 2020 - 17:28:29 EST
Hi!
> [ Upstream commit 8fea78029f5e6ed734ae1957bef23cfda1af4354 ]
>
> If CONFIG_SND_ATMEL_SOC_DMA=m, build error:
>
> sound/soc/atmel/atmel_ssc_dai.o: In function `atmel_ssc_set_audio':
> (.text+0x7cd): undefined reference to `atmel_pcm_dma_platform_register'
>
> Function atmel_pcm_dma_platform_register is defined under
> CONFIG SND_ATMEL_SOC_DMA, so select SND_ATMEL_SOC_DMA in
> CONFIG SND_ATMEL_SOC_SSC, same to CONFIG_SND_ATMEL_SOC_PDC.
4.19 code has significant differences from mainline in this area.
4.19:
config SND_ATMEL_SOC_DMA
tristate
select SND_SOC_GENERIC_DMAENGINE_PCM
default m if SND_ATMEL_SOC_SSC_DMA=m && SND_ATMEL_SOC_SSC=m
...
mainline:
config SND_ATMEL_SOC_DMA
tristate
select SND_SOC_GENERIC_DMAENGINE_PCM
...
Extra 'default m if' line in 4.19 should already prevent this bug,
additional select statements are not neccessary.
Best regards,
Pavel
> +++ b/sound/soc/atmel/Kconfig
> @@ -25,6 +25,8 @@ config SND_ATMEL_SOC_DMA
>
> config SND_ATMEL_SOC_SSC_DMA
> tristate
> + select SND_ATMEL_SOC_DMA
> + select SND_ATMEL_SOC_PDC
>
> config SND_ATMEL_SOC_SSC
> tristate
--
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