diff options
Diffstat (limited to 'sound/sound_core.c')
| -rw-r--r-- | sound/sound_core.c | 79 |
1 files changed, 60 insertions, 19 deletions
diff --git a/sound/sound_core.c b/sound/sound_core.c index 1b04259a432..68614c3ed54 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 __exit 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 __exit 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 */ |