ASoC: sh: 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/sh/dma-sh7760.c

@@ -305,11 +305,6 @@ static struct snd_pcm_ops camelot_pcm_ops = {
 	.pointer	= camelot_pos,
 };
 
-static void camelot_pcm_free(struct snd_pcm *pcm)
-{
-	snd_pcm_lib_preallocate_free_for_all(pcm);
-}
-
 static int camelot_pcm_new(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_pcm *pcm = rtd->pcm;
@@ -328,7 +323,6 @@ static int camelot_pcm_new(struct snd_soc_pcm_runtime *rtd)
 static struct snd_soc_platform_driver sh7760_soc_platform = {
 	.ops		= &camelot_pcm_ops,
 	.pcm_new	= camelot_pcm_new,
-	.pcm_free	= camelot_pcm_free,
 };
 
 static int sh7760_soc_platform_probe(struct platform_device *pdev)

sound/soc/sh/fsi.c

@@ -1765,11 +1765,6 @@ static struct snd_pcm_ops fsi_pcm_ops = {
 #define PREALLOC_BUFFER		(32 * 1024)
 #define PREALLOC_BUFFER_MAX	(32 * 1024)
 
-static void fsi_pcm_free(struct snd_pcm *pcm)
-{
-	snd_pcm_lib_preallocate_free_for_all(pcm);
-}
-
 static int fsi_pcm_new(struct snd_soc_pcm_runtime *rtd)
 {
 	return snd_pcm_lib_preallocate_pages_for_all(
@@ -1821,7 +1816,6 @@ static struct snd_soc_dai_driver fsi_soc_dai[] = {
 static struct snd_soc_platform_driver fsi_soc_platform = {
 	.ops		= &fsi_pcm_ops,
 	.pcm_new	= fsi_pcm_new,
-	.pcm_free	= fsi_pcm_free,
 };
 
 static const struct snd_soc_component_driver fsi_soc_component = {

sound/soc/sh/siu_pcm.c

@@ -589,7 +589,6 @@ static void siu_pcm_free(struct snd_pcm *pcm)
 	tasklet_kill(&port_info->playback.tasklet);
 
 	siu_free_port(port_info);
-	snd_pcm_lib_preallocate_free_for_all(pcm);
 
 	dev_dbg(pcm->card->dev, "%s\n", __func__);
 }