#include <sound/initval.h>
#include <linux/kmod.h>
#include <linux/devfs_fs_kernel.h>
+#include <linux/mutex.h>
#define SNDRV_OS_MINORS 256
int 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;
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;
}
{
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;
}
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;
}
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)