ASoC: au1x: Remove unnecessary snd_pcm_lib_preallocate_free_for_all()

The ALSA core takes care that all preallocated memory is freed when the PCM
itself is freed. There is no need to do this manually in the driver.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/au1x/dbdma2.c

@@ -315,11 +315,6 @@ static struct snd_pcm_ops au1xpsc_pcm_ops = {
 	.pointer	= au1xpsc_pcm_pointer,
 };
 
-static void au1xpsc_pcm_free_dma_buffers(struct snd_pcm *pcm)
-{
-	snd_pcm_lib_preallocate_free_for_all(pcm);
-}
-
 static int au1xpsc_pcm_new(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_card *card = rtd->card->snd_card;
@@ -335,7 +330,6 @@ static int au1xpsc_pcm_new(struct snd_soc_pcm_runtime *rtd)
 static struct snd_soc_platform_driver au1xpsc_soc_platform = {
 	.ops		= &au1xpsc_pcm_ops,
 	.pcm_new	= au1xpsc_pcm_new,
-	.pcm_free	= au1xpsc_pcm_free_dma_buffers,
 };
 
 static int au1xpsc_pcm_drvprobe(struct platform_device *pdev)

sound/soc/au1x/dma.c

@@ -287,11 +287,6 @@ static struct snd_pcm_ops alchemy_pcm_ops = {
 	.pointer		= alchemy_pcm_pointer,
 };
 
-static void alchemy_pcm_free_dma_buffers(struct snd_pcm *pcm)
-{
-	snd_pcm_lib_preallocate_free_for_all(pcm);
-}
-
 static int alchemy_pcm_new(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_pcm *pcm = rtd->pcm;
@@ -305,7 +300,6 @@ static int alchemy_pcm_new(struct snd_soc_pcm_runtime *rtd)
 static struct snd_soc_platform_driver alchemy_pcm_soc_platform = {
 	.ops		= &alchemy_pcm_ops,
 	.pcm_new	= alchemy_pcm_new,
-	.pcm_free	= alchemy_pcm_free_dma_buffers,
 };
 
 static int alchemy_pcm_drvprobe(struct platform_device *pdev)