On 13.01.2020 15:32, Chen Zhou wrote:

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.

Arnd sent a more complete patch for this issue: https://lkml.org/lkml/2019/10/1/620

It wasn't merged due to some integration issues. Could you please try it and let us know if it fixes your issue?

Thanks and best regards, Codrin

Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Chen Zhou chenzhou10@huawei.com

---

sound/soc/atmel/Kconfig | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/sound/soc/atmel/Kconfig b/sound/soc/atmel/Kconfig index f118c22..d1dc8e6 100644 --- a/sound/soc/atmel/Kconfig +++ b/sound/soc/atmel/Kconfig @@ -19,6 +19,8 @@ config SND_ATMEL_SOC_DMA

config SND_ATMEL_SOC_SSC tristate

•   select SND_ATMEL_SOC_DMA
  

•   select SND_ATMEL_SOC_PDC
  
  

  config SND_ATMEL_SOC_SSC_PDC tristate "SoC PCM DAI support for AT91 SSC controller using PDC"

-- 2.7.4