#include <sound/initval.h>
#include <linux/kmod.h>
#include <linux/devfs_fs_kernel.h>
+#include <linux/mutex.h>
#define SNDRV_OS_MINORS 256
static int major = CONFIG_SND_MAJOR;
int snd_major;
+EXPORT_SYMBOL(snd_major);
+
static int cards_limit = 1;
static int device_mode = S_IFCHR | S_IRUGO | S_IWUGO;
* modules are loaded manually, this limit number increases, too.
*/
int snd_ecards_limit;
+EXPORT_SYMBOL(snd_ecards_limit);
static struct snd_minor *snd_minors[SNDRV_OS_MINORS];
-static DECLARE_MUTEX(sound_mutex);
+static DEFINE_MUTEX(sound_mutex);
extern struct class *sound_class;
*/
void snd_request_card(int card)
{
- int locked;
-
if (! current->fs->root)
return;
- read_lock(&snd_card_rwlock);
- locked = snd_cards_lock & (1 << card);
- read_unlock(&snd_card_rwlock);
- if (locked)
+ if (snd_card_locked(card))
return;
if (card < 0 || card >= cards_limit)
return;
request_module("snd-card-%i", card);
}
+EXPORT_SYMBOL(snd_request_card);
+
static void snd_request_other(int minor)
{
char *str;
struct snd_minor *mreg;
void *private_data;
- if (minor > ARRAY_SIZE(snd_minors))
+ if (minor >= ARRAY_SIZE(snd_minors))
return NULL;
- down(&sound_mutex);
+ mutex_lock(&sound_mutex);
mreg = snd_minors[minor];
if (mreg && mreg->type == type)
private_data = mreg->private_data;
else
private_data = NULL;
- up(&sound_mutex);
+ mutex_unlock(&sound_mutex);
return private_data;
}
+EXPORT_SYMBOL(snd_lookup_minor_data);
+
static int snd_open(struct inode *inode, struct file *file)
{
unsigned int minor = iminor(inode);
struct snd_minor *mptr = NULL;
- struct file_operations *old_fops;
+ const struct file_operations *old_fops;
int err = 0;
- if (minor > ARRAY_SIZE(snd_minors))
+ if (minor >= ARRAY_SIZE(snd_minors))
return -ENODEV;
mptr = snd_minors[minor];
if (mptr == NULL) {
* Retrurns zero if successful, or a negative error code on failure.
*/
int snd_register_device(int type, struct snd_card *card, int dev,
- struct file_operations *f_ops, void *private_data,
+ const struct file_operations *f_ops, void *private_data,
const char *name)
{
int minor;
preg->f_ops = f_ops;
preg->private_data = private_data;
strcpy(preg->name, name);
- down(&sound_mutex);
+ mutex_lock(&sound_mutex);
#ifdef CONFIG_SND_DYNAMIC_MINORS
minor = snd_find_free_minor();
#else
minor = -EBUSY;
#endif
if (minor < 0) {
- up(&sound_mutex);
+ mutex_unlock(&sound_mutex);
kfree(preg);
return minor;
}
device = card->dev;
class_device_create(sound_class, NULL, MKDEV(major, minor), device, "%s", name);
- up(&sound_mutex);
+ mutex_unlock(&sound_mutex);
return 0;
}
+EXPORT_SYMBOL(snd_register_device);
+
/**
* snd_unregister_device - unregister the device on the given card
* @type: the device type, SNDRV_DEVICE_TYPE_XXX
struct snd_minor *mptr;
cardnum = card ? card->number : -1;
- down(&sound_mutex);
+ mutex_lock(&sound_mutex);
for (minor = 0; minor < ARRAY_SIZE(snd_minors); ++minor)
if ((mptr = snd_minors[minor]) != NULL &&
mptr->type == type &&
mptr->device == dev)
break;
if (minor == ARRAY_SIZE(snd_minors)) {
- up(&sound_mutex);
+ mutex_unlock(&sound_mutex);
return -EINVAL;
}
class_device_destroy(sound_class, MKDEV(major, minor));
snd_minors[minor] = NULL;
- up(&sound_mutex);
+ mutex_unlock(&sound_mutex);
kfree(mptr);
return 0;
}
+EXPORT_SYMBOL(snd_unregister_device);
+
#ifdef CONFIG_PROC_FS
/*
* INFO PART
*/
-static struct snd_info_entry *snd_minor_info_entry = NULL;
+static struct snd_info_entry *snd_minor_info_entry;
static const char *snd_device_type_name(int type)
{
int minor;
struct snd_minor *mptr;
- down(&sound_mutex);
+ mutex_lock(&sound_mutex);
for (minor = 0; minor < SNDRV_OS_MINORS; ++minor) {
if (!(mptr = snd_minors[minor]))
continue;
snd_iprintf(buffer, "%3i: : %s\n", minor,
snd_device_type_name(mptr->type));
}
- up(&sound_mutex);
+ mutex_unlock(&sound_mutex);
}
int __init snd_minor_info_init(void)
entry = snd_info_create_module_entry(THIS_MODULE, "devices", NULL);
if (entry) {
- entry->c.text.read_size = PAGE_SIZE;
entry->c.text.read = snd_minor_info_read;
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
module_init(alsa_sound_init)
module_exit(alsa_sound_exit)
-
- /* sound.c */
-EXPORT_SYMBOL(snd_major);
-EXPORT_SYMBOL(snd_ecards_limit);
-#if defined(CONFIG_KMOD)
-EXPORT_SYMBOL(snd_request_card);
-#endif
-EXPORT_SYMBOL(snd_register_device);
-EXPORT_SYMBOL(snd_unregister_device);
-EXPORT_SYMBOL(snd_lookup_minor_data);
-#if defined(CONFIG_SND_OSSEMUL)
-EXPORT_SYMBOL(snd_register_oss_device);
-EXPORT_SYMBOL(snd_unregister_oss_device);
-EXPORT_SYMBOL(snd_lookup_oss_minor_data);
-#endif
- /* memory.c */
-EXPORT_SYMBOL(copy_to_user_fromio);
-EXPORT_SYMBOL(copy_from_user_toio);
- /* init.c */
-EXPORT_SYMBOL(snd_cards);
-#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
-EXPORT_SYMBOL(snd_mixer_oss_notify_callback);
-#endif
-EXPORT_SYMBOL(snd_card_new);
-EXPORT_SYMBOL(snd_card_disconnect);
-EXPORT_SYMBOL(snd_card_free);
-EXPORT_SYMBOL(snd_card_free_in_thread);
-EXPORT_SYMBOL(snd_card_register);
-EXPORT_SYMBOL(snd_component_add);
-EXPORT_SYMBOL(snd_card_file_add);
-EXPORT_SYMBOL(snd_card_file_remove);
-#ifdef CONFIG_PM
-EXPORT_SYMBOL(snd_power_wait);
-#endif
- /* device.c */
-EXPORT_SYMBOL(snd_device_new);
-EXPORT_SYMBOL(snd_device_register);
-EXPORT_SYMBOL(snd_device_free);
- /* isadma.c */
-#ifdef CONFIG_ISA_DMA_API
-EXPORT_SYMBOL(snd_dma_program);
-EXPORT_SYMBOL(snd_dma_disable);
-EXPORT_SYMBOL(snd_dma_pointer);
-#endif
- /* info.c */
-#ifdef CONFIG_PROC_FS
-EXPORT_SYMBOL(snd_seq_root);
-EXPORT_SYMBOL(snd_iprintf);
-EXPORT_SYMBOL(snd_info_get_line);
-EXPORT_SYMBOL(snd_info_get_str);
-EXPORT_SYMBOL(snd_info_create_module_entry);
-EXPORT_SYMBOL(snd_info_create_card_entry);
-EXPORT_SYMBOL(snd_info_free_entry);
-EXPORT_SYMBOL(snd_info_register);
-EXPORT_SYMBOL(snd_info_unregister);
-EXPORT_SYMBOL(snd_card_proc_new);
-#endif
- /* info_oss.c */
-#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
-EXPORT_SYMBOL(snd_oss_info_register);
-#endif
- /* control.c */
-EXPORT_SYMBOL(snd_ctl_new);
-EXPORT_SYMBOL(snd_ctl_new1);
-EXPORT_SYMBOL(snd_ctl_free_one);
-EXPORT_SYMBOL(snd_ctl_add);
-EXPORT_SYMBOL(snd_ctl_remove);
-EXPORT_SYMBOL(snd_ctl_remove_id);
-EXPORT_SYMBOL(snd_ctl_rename_id);
-EXPORT_SYMBOL(snd_ctl_find_numid);
-EXPORT_SYMBOL(snd_ctl_find_id);
-EXPORT_SYMBOL(snd_ctl_notify);
-EXPORT_SYMBOL(snd_ctl_register_ioctl);
-EXPORT_SYMBOL(snd_ctl_unregister_ioctl);
-#ifdef CONFIG_COMPAT
-EXPORT_SYMBOL(snd_ctl_register_ioctl_compat);
-EXPORT_SYMBOL(snd_ctl_unregister_ioctl_compat);
-#endif
-EXPORT_SYMBOL(snd_ctl_elem_read);
-EXPORT_SYMBOL(snd_ctl_elem_write);
- /* misc.c */
-EXPORT_SYMBOL(release_and_free_resource);
-#ifdef CONFIG_SND_VERBOSE_PRINTK
-EXPORT_SYMBOL(snd_verbose_printk);
-#endif
-#if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_VERBOSE_PRINTK)
-EXPORT_SYMBOL(snd_verbose_printd);
-#endif
projects / linux-2.6-microblaze.git / blobdiff