summaryrefslogtreecommitdiff
path: root/sound/core/seq/seq_device.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/core/seq/seq_device.c')
-rw-r--r--sound/core/seq/seq_device.c53
1 files changed, 27 insertions, 26 deletions
diff --git a/sound/core/seq/seq_device.c b/sound/core/seq/seq_device.c
index 9ece443fba55..d9a3e5a18d6a 100644
--- a/sound/core/seq/seq_device.c
+++ b/sound/core/seq/seq_device.c
@@ -45,6 +45,7 @@
#include <sound/initval.h>
#include <linux/kmod.h>
#include <linux/slab.h>
+#include <linux/mutex.h>
MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
MODULE_DESCRIPTION("ALSA sequencer device management");
@@ -69,7 +70,7 @@ struct ops_list {
struct list_head dev_list; /* list of devices */
int num_devices; /* number of associated devices */
int num_init_devices; /* number of initialized devices */
- struct semaphore reg_mutex;
+ struct mutex reg_mutex;
struct list_head list; /* next driver */
};
@@ -77,7 +78,7 @@ struct ops_list {
static LIST_HEAD(opslist);
static int num_ops;
-static DECLARE_MUTEX(ops_mutex);
+static DEFINE_MUTEX(ops_mutex);
#ifdef CONFIG_PROC_FS
static struct snd_info_entry *info_entry = NULL;
#endif
@@ -108,7 +109,7 @@ static void snd_seq_device_info(struct snd_info_entry *entry,
{
struct list_head *head;
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
list_for_each(head, &opslist) {
struct ops_list *ops = list_entry(head, struct ops_list, list);
snd_iprintf(buffer, "snd-%s%s%s%s,%d\n",
@@ -118,7 +119,7 @@ static void snd_seq_device_info(struct snd_info_entry *entry,
ops->driver & DRIVER_LOCKED ? ",locked" : "",
ops->num_devices);
}
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
}
#endif
@@ -154,20 +155,20 @@ void snd_seq_device_load_drivers(void)
if (! current->fs->root)
return;
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
list_for_each(head, &opslist) {
struct ops_list *ops = list_entry(head, struct ops_list, list);
if (! (ops->driver & DRIVER_LOADED) &&
! (ops->driver & DRIVER_REQUESTED)) {
ops->used++;
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
ops->driver |= DRIVER_REQUESTED;
request_module("snd-%s", ops->id);
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
ops->used--;
}
}
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
#endif
}
@@ -214,10 +215,10 @@ int snd_seq_device_new(struct snd_card *card, int device, char *id, int argsize,
dev->status = SNDRV_SEQ_DEVICE_FREE;
/* add this device to the list */
- down(&ops->reg_mutex);
+ mutex_lock(&ops->reg_mutex);
list_add_tail(&dev->list, &ops->dev_list);
ops->num_devices++;
- up(&ops->reg_mutex);
+ mutex_unlock(&ops->reg_mutex);
unlock_driver(ops);
@@ -246,10 +247,10 @@ static int snd_seq_device_free(struct snd_seq_device *dev)
return -ENXIO;
/* remove the device from the list */
- down(&ops->reg_mutex);
+ mutex_lock(&ops->reg_mutex);
list_del(&dev->list);
ops->num_devices--;
- up(&ops->reg_mutex);
+ mutex_unlock(&ops->reg_mutex);
free_device(dev, ops);
if (dev->private_free)
@@ -344,7 +345,7 @@ int snd_seq_device_register_driver(char *id, struct snd_seq_dev_ops *entry,
return -EBUSY;
}
- down(&ops->reg_mutex);
+ mutex_lock(&ops->reg_mutex);
/* copy driver operators */
ops->ops = *entry;
ops->driver |= DRIVER_LOADED;
@@ -355,7 +356,7 @@ int snd_seq_device_register_driver(char *id, struct snd_seq_dev_ops *entry,
struct snd_seq_device *dev = list_entry(head, struct snd_seq_device, list);
init_device(dev, ops);
}
- up(&ops->reg_mutex);
+ mutex_unlock(&ops->reg_mutex);
unlock_driver(ops);
snd_seq_autoload_unlock();
@@ -378,17 +379,17 @@ static struct ops_list * create_driver(char *id)
/* set up driver entry */
strlcpy(ops->id, id, sizeof(ops->id));
- init_MUTEX(&ops->reg_mutex);
+ mutex_init(&ops->reg_mutex);
ops->driver = DRIVER_EMPTY;
INIT_LIST_HEAD(&ops->dev_list);
/* lock this instance */
ops->used = 1;
/* register driver entry */
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
list_add_tail(&ops->list, &opslist);
num_ops++;
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
return ops;
}
@@ -414,7 +415,7 @@ int snd_seq_device_unregister_driver(char *id)
}
/* close and release all devices associated with this driver */
- down(&ops->reg_mutex);
+ mutex_lock(&ops->reg_mutex);
ops->driver |= DRIVER_LOCKED; /* do not remove this driver recursively */
list_for_each(head, &ops->dev_list) {
struct snd_seq_device *dev = list_entry(head, struct snd_seq_device, list);
@@ -425,7 +426,7 @@ int snd_seq_device_unregister_driver(char *id)
if (ops->num_init_devices > 0)
snd_printk(KERN_ERR "free_driver: init_devices > 0!! (%d)\n",
ops->num_init_devices);
- up(&ops->reg_mutex);
+ mutex_unlock(&ops->reg_mutex);
unlock_driver(ops);
@@ -443,7 +444,7 @@ static void remove_drivers(void)
{
struct list_head *head;
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
head = opslist.next;
while (head != &opslist) {
struct ops_list *ops = list_entry(head, struct ops_list, list);
@@ -456,7 +457,7 @@ static void remove_drivers(void)
} else
head = head->next;
}
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
}
/*
@@ -519,16 +520,16 @@ static struct ops_list * find_driver(char *id, int create_if_empty)
{
struct list_head *head;
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
list_for_each(head, &opslist) {
struct ops_list *ops = list_entry(head, struct ops_list, list);
if (strcmp(ops->id, id) == 0) {
ops->used++;
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
return ops;
}
}
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
if (create_if_empty)
return create_driver(id);
return NULL;
@@ -536,9 +537,9 @@ static struct ops_list * find_driver(char *id, int create_if_empty)
static void unlock_driver(struct ops_list *ops)
{
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
ops->used--;
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 17:19:10 +0000