diff --git a/sound/soc/dwc/Kconfig b/sound/soc/dwc/Kconfig
index c297efe43861..c6fd95fa5ca6 100644
--- a/sound/soc/dwc/Kconfig
+++ b/sound/soc/dwc/Kconfig
@@ -8,10 +8,10 @@ config SND_DESIGNWARE_I2S
 	 maximum of 8 channels each for play and record.
 
 config SND_DESIGNWARE_PCM
-	tristate "PCM PIO extension for I2S driver"
+	bool "PCM PIO extension for I2S driver"
 	depends on SND_DESIGNWARE_I2S
 	help
-	 Say Y, M or N if you want to add a custom ALSA extension that registers
+	 Say Y or N if you want to add a custom ALSA extension that registers
 	 a PCM and uses PIO to transfer data.
 
 	 This functionality is specially suited for I2S devices that don't have
diff --git a/sound/soc/dwc/Makefile b/sound/soc/dwc/Makefile
index 38f1ca31c5fa..3e24c0ff95fb 100644
--- a/sound/soc/dwc/Makefile
+++ b/sound/soc/dwc/Makefile
@@ -1,5 +1,5 @@
 # SYNOPSYS Platform Support
 obj-$(CONFIG_SND_DESIGNWARE_I2S) += designware_i2s.o
-ifdef CONFIG_SND_DESIGNWARE_PCM
-obj-$(CONFIG_SND_DESIGNWARE_I2S) += designware_pcm.o
-endif
+
+designware_i2s-y := dwc-i2s.o
+designware_i2s-$(CONFIG_SND_DESIGNWARE_PCM) += dwc-pcm.o
diff --git a/sound/soc/dwc/designware_i2s.c b/sound/soc/dwc/dwc-i2s.c
similarity index 100%
rename from sound/soc/dwc/designware_i2s.c
rename to sound/soc/dwc/dwc-i2s.c
diff --git a/sound/soc/dwc/designware_pcm.c b/sound/soc/dwc/dwc-pcm.c
similarity index 98%
rename from sound/soc/dwc/designware_pcm.c
rename to sound/soc/dwc/dwc-pcm.c
index 459ec861e6b6..406fd867117b 100644
--- a/sound/soc/dwc/designware_pcm.c
+++ b/sound/soc/dwc/dwc-pcm.c
@@ -129,13 +129,11 @@ void dw_pcm_push_tx(struct dw_i2s_dev *dev)
 {
 	dw_pcm_transfer(dev, true);
 }
-EXPORT_SYMBOL_GPL(dw_pcm_push_tx);
 
 void dw_pcm_pop_rx(struct dw_i2s_dev *dev)
 {
 	dw_pcm_transfer(dev, false);
 }
-EXPORT_SYMBOL_GPL(dw_pcm_pop_rx);
 
 static int dw_pcm_open(struct snd_pcm_substream *substream)
 {
@@ -281,4 +279,3 @@ int dw_pcm_register(struct platform_device *pdev)
 {
 	return devm_snd_soc_register_platform(&pdev->dev, &dw_pcm_platform);
 }
-EXPORT_SYMBOL_GPL(dw_pcm_register);