[ALSA] PCM midlevel & PCM OSS - make procfs & OSS plugin code optional

Modules: ALSA Core,PCM Midlevel,ALSA<-OSS emulation,USB generic driver

1) The verbose procfs code for the PCM midlevel and usb audio
   can be removed now (more patches will follow).
   CONFIG_SND_VERBOSE_PROCFS
2) The PCM OSS plugin system can be also compiled optionaly.
   CONFIG_SND_PCM_OSS_PLUGINS

Signed-off-by: Jaroslav Kysela <perex@suse.cz>

9 files changed, 63 insertions, 2 deletions

diff --git a/sound/core/oss/copy.c b/sound/core/oss/copy.c
index d6a04c2d5a7..7c008c4c0dd 100644
--- a/sound/core/oss/copy.c
+++ b/sound/core/oss/copy.c
@@ -20,6 +20,9 @@
  */
 
 #include <sound/driver.h>
+
+#ifdef SND_PCM_OSS_PLUGINS
+
 #include <linux/time.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -85,3 +88,5 @@ int snd_pcm_plugin_build_copy(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
+
+#endif
diff --git a/sound/core/oss/io.c b/sound/core/oss/io.c
index 322702e05f3..b6e7ce30e5a 100644
--- a/sound/core/oss/io.c
+++ b/sound/core/oss/io.c
@@ -20,6 +20,9 @@
  */
   
 #include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
 #include <linux/time.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -132,3 +135,5 @@ int snd_pcm_plugin_build_io(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
+
+#endif
diff --git a/sound/core/oss/linear.c b/sound/core/oss/linear.c
index 8cbfa415ce4..ef331230b3a 100644
--- a/sound/core/oss/linear.c
+++ b/sound/core/oss/linear.c
@@ -21,6 +21,9 @@
  */
 
 #include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
 #include <linux/time.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -156,3 +159,5 @@ int snd_pcm_plugin_build_linear(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
+
+#endif
diff --git a/sound/core/oss/mulaw.c b/sound/core/oss/mulaw.c
index 14f5578ec7a..ed12c81fcf1 100644
--- a/sound/core/oss/mulaw.c
+++ b/sound/core/oss/mulaw.c
@@ -22,6 +22,9 @@
  */
   
 #include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
 #include <linux/time.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -306,3 +309,5 @@ int snd_pcm_plugin_build_mulaw(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
+
+#endif
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index 7fd072392c7..bc24d028f51 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -78,6 +78,7 @@ static inline void snd_leave_user(mm_segment_t fs)
 	set_fs(fs);
 }
 
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
 static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
@@ -122,6 +123,7 @@ int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin)
 	}
 	return 0;
 }
+#endif /* CONFIG_SND_PCM_OSS_PLUGINS */
 
 static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames)
 {
@@ -412,6 +414,7 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
 	oss_frame_size = snd_pcm_format_physical_width(params_format(params)) *
 			 params_channels(params) / 8;
 
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
 	snd_pcm_oss_plugin_clear(substream);
 	if (!direct) {
 		/* add necessary plugins */
@@ -441,6 +444,7 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
 			}
 		}
 	}
+#endif
 
 	err = snd_pcm_oss_period_size(substream, params, sparams);
 	if (err < 0)
@@ -498,11 +502,13 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
 	runtime->oss.periods = params_periods(sparams);
 	oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams));
 	snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure);
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
 	if (runtime->oss.plugin_first) {
 		err = snd_pcm_plug_alloc(substream, oss_period_size);
 		if (err < 0)
 			goto failure;
 	}
+#endif
 	oss_period_size *= oss_frame_size;
 
 	oss_buffer_size = oss_period_size * runtime->oss.periods;
@@ -784,6 +790,7 @@ static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const cha
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	snd_pcm_sframes_t frames, frames1;
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
 	if (runtime->oss.plugin_first) {
 		struct snd_pcm_plugin_channel *channels;
 		size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8;
@@ -800,7 +807,9 @@ static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const cha
 		if (frames1 <= 0)
 			return frames1;
 		bytes = frames1 * oss_frame_bytes;
-	} else {
+	} else
+#endif
+	{
 		frames = bytes_to_frames(runtime, bytes);
 		frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel);
 		if (frames1 <= 0)
@@ -871,6 +880,7 @@ static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf,
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	snd_pcm_sframes_t frames, frames1;
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
 	char __user *final_dst = (char __user *)buf;
 	if (runtime->oss.plugin_first) {
 		struct snd_pcm_plugin_channel *channels;
@@ -887,7 +897,9 @@ static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf,
 		bytes = frames1 * oss_frame_bytes;
 		if (!in_kernel && copy_to_user(final_dst, buf, bytes))
 			return -EFAULT;
-	} else {
+	} else
+#endif
+	{
 		frames = bytes_to_frames(runtime, bytes);
 		frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel);
 		if (frames1 <= 0)
@@ -1692,7 +1704,9 @@ static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream)
 	struct snd_pcm_runtime *runtime;
 	runtime = substream->runtime;
 	vfree(runtime->oss.buffer);
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
 	snd_pcm_oss_plugin_clear(substream);
+#endif
 	substream->oss.file = NULL;
 	substream->oss.oss = 0;
 }
@@ -2246,8 +2260,10 @@ static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area)
 		if ((err = snd_pcm_oss_change_params(substream)) < 0)
 			return err;
 	}
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
 	if (runtime->oss.plugin_first != NULL)
 		return -EIO;
+#endif
 
 	if (area->vm_pgoff != 0)
 		return -EINVAL;
diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c
index 7e8676880dd..89bc8f96504 100644
--- a/sound/core/oss/pcm_plugin.c
+++ b/sound/core/oss/pcm_plugin.c
@@ -25,6 +25,9 @@
 #endif
 
 #include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
 #include <linux/slab.h>
 #include <linux/time.h>
 #include <linux/vmalloc.h>
@@ -916,3 +919,5 @@ int snd_pcm_area_copy(const struct snd_pcm_channel_area *src_area, size_t src_of
 	}
 	return 0;
 }
+
+#endif
diff --git a/sound/core/oss/pcm_plugin.h b/sound/core/oss/pcm_plugin.h
index 29198da615c..a8a4f958043 100644
--- a/sound/core/oss/pcm_plugin.h
+++ b/sound/core/oss/pcm_plugin.h
@@ -22,6 +22,8 @@
  *
  */
 
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
 #include <linux/bitmap.h>
 
 static inline unsigned long *bitmap_alloc(unsigned int nbits)
@@ -191,6 +193,14 @@ void zero_channel(struct snd_pcm_plugin *plugin,
 		  const struct snd_pcm_plugin_channel *dst_channel,
 		  size_t samples);
 
+#else
+
+static inline snd_pcm_sframes_t snd_pcm_plug_client_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t drv_size) { return drv_size; }
+static inline snd_pcm_sframes_t snd_pcm_plug_slave_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t clt_size) { return clt_size; }
+static inline int snd_pcm_plug_slave_format(int format, struct snd_mask *format_mask) { return format; }
+
+#endif
+
 #ifdef PLUGIN_DEBUG
 #define pdprintf( fmt, args... ) printk( "plugin: " fmt, ##args)
 #else
diff --git a/sound/core/oss/rate.c b/sound/core/oss/rate.c
index 4854cef6fb4..c4b75bff0ee 100644
--- a/sound/core/oss/rate.c
+++ b/sound/core/oss/rate.c
@@ -20,6 +20,9 @@
  */
   
 #include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
 #include <linux/time.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -377,3 +380,5 @@ int snd_pcm_plugin_build_rate(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
+
+#endif
diff --git a/sound/core/oss/route.c b/sound/core/oss/route.c
index 726c5caa3fd..f99a54e6551 100644
--- a/sound/core/oss/route.c
+++ b/sound/core/oss/route.c
@@ -20,6 +20,9 @@
  */
 
 #include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
 #include <linux/slab.h>
 #include <linux/time.h>
 #include <sound/core.h>
@@ -519,3 +522,5 @@ int snd_pcm_plugin_build_route(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
+
+#endif