summaryrefslogtreecommitdiffstats
path: root/sound/sound_core.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/sound_core.c')
-rw-r--r--sound/sound_core.c79
1 files changed, 60 insertions, 19 deletions
diff --git a/sound/sound_core.c b/sound/sound_core.c
index 1b04259..4ae07e2 100644
--- a/sound/sound_core.c
+++ b/sound/sound_core.c
@@ -1,5 +1,61 @@
/*
- * Sound core handling. Breaks out sound functions to submodules
+ * Sound core. This file is composed of two parts. sound_class
+ * which is common to both OSS and ALSA and OSS sound core which
+ * is used OSS or emulation of it.
+ */
+
+/*
+ * First, the common part.
+ */
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/err.h>
+
+#ifdef CONFIG_SOUND_OSS_CORE
+static int __init init_oss_soundcore(void);
+static void cleanup_oss_soundcore(void);
+#else
+static inline int init_oss_soundcore(void) { return 0; }
+static inline void cleanup_oss_soundcore(void) { }
+#endif
+
+struct class *sound_class;
+EXPORT_SYMBOL(sound_class);
+
+MODULE_DESCRIPTION("Core sound module");
+MODULE_AUTHOR("Alan Cox");
+MODULE_LICENSE("GPL");
+
+static int __init init_soundcore(void)
+{
+ int rc;
+
+ rc = init_oss_soundcore();
+ if (rc)
+ return rc;
+
+ sound_class = class_create(THIS_MODULE, "sound");
+ if (IS_ERR(sound_class)) {
+ cleanup_oss_soundcore();
+ return PTR_ERR(sound_class);
+ }
+
+ return 0;
+}
+
+static void __exit cleanup_soundcore(void)
+{
+ cleanup_oss_soundcore();
+ class_destroy(sound_class);
+}
+
+module_init(init_soundcore);
+module_exit(cleanup_soundcore);
+
+
+#ifdef CONFIG_SOUND_OSS_CORE
+/*
+ * OSS sound core handling. Breaks out sound functions to submodules
*
* Author: Alan Cox <alan.cox@linux.org>
*
@@ -34,21 +90,17 @@
* locking at some point in 2.3.x.
*/
-#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/types.h>
#include <linux/kernel.h>
-#include <linux/fs.h>
#include <linux/sound.h>
#include <linux/major.h>
#include <linux/kmod.h>
-#include <linux/device.h>
#define SOUND_STEP 16
-
struct sound_unit
{
int unit_minor;
@@ -64,9 +116,6 @@ extern int msnd_classic_init(void);
extern int msnd_pinnacle_init(void);
#endif
-struct class *sound_class;
-EXPORT_SYMBOL(sound_class);
-
/*
* Low level list operator. Scan the ordered list, find a hole and
* join into it. Called with the lock asserted
@@ -523,31 +572,23 @@ int soundcore_open(struct inode *inode, struct file *file)
return -ENODEV;
}
-MODULE_DESCRIPTION("Core sound module");
-MODULE_AUTHOR("Alan Cox");
-MODULE_LICENSE("GPL");
MODULE_ALIAS_CHARDEV_MAJOR(SOUND_MAJOR);
-static void __exit cleanup_soundcore(void)
+static void cleanup_oss_soundcore(void)
{
/* We have nothing to really do here - we know the lists must be
empty */
unregister_chrdev(SOUND_MAJOR, "sound");
- class_destroy(sound_class);
}
-static int __init init_soundcore(void)
+static int __init init_oss_soundcore(void)
{
if (register_chrdev(SOUND_MAJOR, "sound", &soundcore_fops)==-1) {
printk(KERN_ERR "soundcore: sound device already in use.\n");
return -EBUSY;
}
- sound_class = class_create(THIS_MODULE, "sound");
- if (IS_ERR(sound_class))
- return PTR_ERR(sound_class);
return 0;
}
-module_init(init_soundcore);
-module_exit(cleanup_soundcore);
+#endif /* CONFIG_SOUND_OSS_CORE */
OpenPOWER on IntegriCloud