[ALSA] Remove ifdefs from OSS PCM emulation codes

Fix Makefile to compile files conditionally to CONFIG_SND_PCM_OSS_PLUGINS,
and remove unneeded ifdefs in these files.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/core/oss/Makefile

@@ -5,7 +5,8 @@
 
 snd-mixer-oss-objs := mixer_oss.o
 
-snd-pcm-oss-objs := pcm_oss.o pcm_plugin.o \
+snd-pcm-oss-y := pcm_oss.o
+snd-pcm-oss-$(CONFIG_SND_PCM_OSS_PLUGINS) += pcm_plugin.o \
 	io.o copy.o linear.o mulaw.o route.o rate.o
 
 obj-$(CONFIG_SND_MIXER_OSS) += snd-mixer-oss.o

sound/core/oss/copy.c

@@ -20,9 +20,6 @@
  */
 
 #include <sound/driver.h>
-
-#ifdef CONFIG_SND_PCM_OSS_PLUGINS
-
 #include <linux/time.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -88,5 +85,3 @@ int snd_pcm_plugin_build_copy(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
-
-#endif

sound/core/oss/io.c

@@ -20,9 +20,6 @@
  */
   
 #include <sound/driver.h>
-
-#ifdef CONFIG_SND_PCM_OSS_PLUGINS
-
 #include <linux/time.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -135,5 +132,3 @@ int snd_pcm_plugin_build_io(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
-
-#endif

sound/core/oss/linear.c

@@ -21,9 +21,6 @@
  */
 
 #include <sound/driver.h>
-
-#ifdef CONFIG_SND_PCM_OSS_PLUGINS
-
 #include <linux/time.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -159,5 +156,3 @@ int snd_pcm_plugin_build_linear(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
-
-#endif

sound/core/oss/mulaw.c

@@ -22,9 +22,6 @@
  */
   
 #include <sound/driver.h>
-
-#ifdef CONFIG_SND_PCM_OSS_PLUGINS
-
 #include <linux/time.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -328,5 +325,3 @@ int snd_pcm_plugin_build_mulaw(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
-
-#endif

sound/core/oss/pcm_plugin.c

@@ -25,9 +25,6 @@
 #endif
 
 #include <sound/driver.h>
-
-#ifdef CONFIG_SND_PCM_OSS_PLUGINS
-
 #include <linux/slab.h>
 #include <linux/time.h>
 #include <linux/vmalloc.h>
@@ -740,5 +737,3 @@ int snd_pcm_area_copy(const struct snd_pcm_channel_area *src_area, size_t src_of
 	}
 	return 0;
 }
-
-#endif

sound/core/oss/rate.c

@@ -20,9 +20,6 @@
  */
   
 #include <sound/driver.h>
-
-#ifdef CONFIG_SND_PCM_OSS_PLUGINS
-
 #include <linux/time.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -340,5 +337,3 @@ int snd_pcm_plugin_build_rate(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
-
-#endif

sound/core/oss/route.c

@@ -20,9 +20,6 @@
  */
 
 #include <sound/driver.h>
-
-#ifdef CONFIG_SND_PCM_OSS_PLUGINS
-
 #include <linux/slab.h>
 #include <linux/time.h>
 #include <sound/core.h>
@@ -108,5 +105,3 @@ int snd_pcm_plugin_build_route(struct snd_pcm_substream *plug,
 	*r_plugin = plugin;
 	return 0;
 }
-
-#endif