When SND_SOC_SOF_PCI=y, and SND_INTEL_DSP_CONFIG=m, below errors can be seen: sound/soc/sof/sof-pci-dev.o: In function `sof_pci_probe': sof-pci-dev.c:(.text+0xb9): undefined reference to `snd_intel_dsp_driver_probe' After commit 82d9d54a6c0e ("ALSA: hda: add Intel DSP configuration / probe code"), sof_pci_probe() will call snd_intel_dsp_driver_probe(), so it should select SND_INTEL_DSP_CONFIG in Kconfig SND_SOC_SOF_PCI. Fixes: 82d9d54a6c0e ("ALSA: hda: add Intel DSP configuration / probe code") Signed-off-by: Mao Wenan <maowenan@xxxxxxxxxx> --- sound/soc/sof/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/sof/Kconfig b/sound/soc/sof/Kconfig index 56a3ab6..a9b2be2 100644 --- a/sound/soc/sof/Kconfig +++ b/sound/soc/sof/Kconfig @@ -16,6 +16,7 @@ config SND_SOC_SOF_PCI select SND_SOC_ACPI if ACPI select SND_SOC_SOF_OPTIONS select SND_SOC_SOF_INTEL_PCI if SND_SOC_SOF_INTEL_TOPLEVEL + select SND_INTEL_DSP_CONFIG help This adds support for PCI enumeration. This option is required to enable Intel Skylake+ devices -- 2.7.4