ASoC: pcm: Drop obsoleted PCM copy_user ops

Now all ASoC users have been replaced to use the new PCM copy ops,
let's drop the obsoleted copy_user ops and its helper function.

Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230815190136.8987-25-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Author: tiwai

include/sound/soc-component.h

@@ -137,10 +137,6 @@ struct snd_soc_component_driver {
 		struct timespec64 *audio_ts,
 		struct snd_pcm_audio_tstamp_config *audio_tstamp_config,
 		struct snd_pcm_audio_tstamp_report *audio_tstamp_report);
-	int (*copy_user)(struct snd_soc_component *component,
-			 struct snd_pcm_substream *substream, int channel,
-			 unsigned long pos, void __user *buf,
-			 unsigned long bytes);
 	int (*copy)(struct snd_soc_component *component,
 		    struct snd_pcm_substream *substream, int channel,
 		    unsigned long pos, struct iov_iter *buf,
@@ -513,9 +509,6 @@ int snd_soc_pcm_component_pointer(struct snd_pcm_substream *substream);
 int snd_soc_pcm_component_ioctl(struct snd_pcm_substream *substream,
 				unsigned int cmd, void *arg);
 int snd_soc_pcm_component_sync_stop(struct snd_pcm_substream *substream);
-int snd_soc_pcm_component_copy_user(struct snd_pcm_substream *substream,
-				    int channel, unsigned long pos,
-				    void __user *buf, unsigned long bytes);
 int snd_soc_pcm_component_copy(struct snd_pcm_substream *substream,
 			       int channel, unsigned long pos,
 			       struct iov_iter *buf, unsigned long bytes);

sound/soc/soc-component.c

@@ -1070,26 +1070,6 @@ int snd_soc_pcm_component_copy(struct snd_pcm_substream *substream,
 	return -EINVAL;
 }
 
-int snd_soc_pcm_component_copy_user(struct snd_pcm_substream *substream,
-				    int channel, unsigned long pos,
-				    void __user *buf, unsigned long bytes)
-{
-	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
-	struct snd_soc_component *component;
-	int i;
-
-	/* FIXME. it returns 1st copy now */
-	for_each_rtd_components(rtd, i, component)
-		if (component->driver->copy_user)
-			return soc_component_ret(
-				component,
-				component->driver->copy_user(
-					component, substream, channel,
-					pos, buf, bytes));
-
-	return -EINVAL;
-}
-
 struct page *snd_soc_pcm_component_page(struct snd_pcm_substream *substream,
 					unsigned long offset)
 {

sound/soc/soc-pcm.c

@@ -2975,8 +2975,6 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
 			rtd->ops.sync_stop	= snd_soc_pcm_component_sync_stop;
 		if (drv->copy)
 			rtd->ops.copy		= snd_soc_pcm_component_copy;
-		else if (drv->copy_user)
-			rtd->ops.copy_user	= snd_soc_pcm_component_copy_user;
 		if (drv->page)
 			rtd->ops.page		= snd_soc_pcm_component_page;
 		if (drv->mmap)