@@ -309,10 +309,9 @@ int snd_device_new(struct snd_card *card, enum snd_device_type type,
void *device_data, struct snd_device_ops *ops);
int snd_device_register(struct snd_card *card, void *device_data);
int snd_device_register_all(struct snd_card *card);
-int snd_device_disconnect(struct snd_card *card, void *device_data);
int snd_device_disconnect_all(struct snd_card *card);
-int snd_device_free(struct snd_card *card, void *device_data);
-int snd_device_free_all(struct snd_card *card);
+void snd_device_free(struct snd_card *card, void *device_data);
+void snd_device_free_all(struct snd_card *card);
/* isadma.c */
@@ -73,6 +73,30 @@ int snd_device_new(struct snd_card *card, enum snd_device_type type,
}
EXPORT_SYMBOL(snd_device_new);
+static int __snd_device_disconnect(struct snd_device *dev)
+{
+ if (dev->state == SNDRV_DEV_REGISTERED) {
+ if (dev->ops->dev_disconnect &&
+ dev->ops->dev_disconnect(dev))
+ dev_err(dev->card->dev, "device disconnect failure\n");
+ dev->state = SNDRV_DEV_DISCONNECTED;
+ }
+ return 0;
+}
+
+static void __snd_device_free(struct snd_device *dev)
+{
+ /* unlink */
+ list_del(&dev->list);
+
+ __snd_device_disconnect(dev);
+ if (dev->ops->dev_free) {
+ if (dev->ops->dev_free(dev))
+ dev_err(dev->card->dev, "device free failure\n");
+ }
+ kfree(dev);
+}
+
static struct snd_device *look_for_dev(struct snd_card *card, void *device_data)
{
struct snd_device *dev;
@@ -92,71 +116,33 @@ static struct snd_device *look_for_dev(struct snd_card *card, void *device_data)
* Removes the device from the list on the card and invokes the
* callbacks, dev_disconnect and dev_free, corresponding to the state.
* Then release the device.
- *
- * Return: Zero if successful, or a negative error code on failure or if the
- * device not found.
*/
-int snd_device_free(struct snd_card *card, void *device_data)
+void snd_device_free(struct snd_card *card, void *device_data)
{
struct snd_device *dev;
if (snd_BUG_ON(!card || !device_data))
- return -ENXIO;
+ return;
dev = look_for_dev(card, device_data);
- if (dev) {
- /* unlink */
- list_del(&dev->list);
- if (dev->state == SNDRV_DEV_REGISTERED &&
- dev->ops->dev_disconnect)
- if (dev->ops->dev_disconnect(dev))
- dev_err(card->dev,
- "device disconnect failure\n");
- if (dev->ops->dev_free) {
- if (dev->ops->dev_free(dev))
- dev_err(card->dev, "device free failure\n");
- }
- kfree(dev);
- return 0;
- }
- dev_dbg(card->dev, "device free %p (from %pF), not found\n",
- device_data, __builtin_return_address(0));
- return -ENXIO;
+ if (dev)
+ __snd_device_free(dev);
+ else
+ dev_dbg(card->dev, "device free %p (from %pF), not found\n",
+ device_data, __builtin_return_address(0));
}
EXPORT_SYMBOL(snd_device_free);
-/**
- * snd_device_disconnect - disconnect the device
- * @card: the card instance
- * @device_data: the data pointer to disconnect
- *
- * Turns the device into the disconnection state, invoking
- * dev_disconnect callback, if the device was already registered.
- *
- * Usually called from snd_card_disconnect().
- *
- * Return: Zero if successful, or a negative error code on failure or if the
- * device not found.
- */
-int snd_device_disconnect(struct snd_card *card, void *device_data)
+static int __snd_device_register(struct snd_device *dev)
{
- struct snd_device *dev;
-
- if (snd_BUG_ON(!card || !device_data))
- return -ENXIO;
- dev = look_for_dev(card, device_data);
- if (dev) {
- if (dev->state == SNDRV_DEV_REGISTERED &&
- dev->ops->dev_disconnect) {
- if (dev->ops->dev_disconnect(dev))
- dev_err(card->dev,
- "device disconnect failure\n");
- dev->state = SNDRV_DEV_DISCONNECTED;
+ if (dev->state == SNDRV_DEV_BUILD) {
+ if (dev->ops->dev_register) {
+ int err = dev->ops->dev_register(dev);
+ if (err < 0)
+ return err;
}
- return 0;
+ dev->state = SNDRV_DEV_REGISTERED;
}
- dev_dbg(card->dev, "device disconnect %p (from %pF), not found\n",
- device_data, __builtin_return_address(0));
- return -ENXIO;
+ return 0;
}
/**
@@ -175,21 +161,12 @@ int snd_device_disconnect(struct snd_card *card, void *device_data)
int snd_device_register(struct snd_card *card, void *device_data)
{
struct snd_device *dev;
- int err;
if (snd_BUG_ON(!card || !device_data))
return -ENXIO;
dev = look_for_dev(card, device_data);
- if (dev) {
- if (dev->state == SNDRV_DEV_BUILD && dev->ops->dev_register) {
- if ((err = dev->ops->dev_register(dev)) < 0)
- return err;
- dev->state = SNDRV_DEV_REGISTERED;
- return 0;
- }
- dev_dbg(card->dev, "snd_device_register busy\n");
- return -EBUSY;
- }
+ if (dev)
+ return __snd_device_register(dev);
snd_BUG();
return -ENXIO;
}
@@ -207,11 +184,9 @@ int snd_device_register_all(struct snd_card *card)
if (snd_BUG_ON(!card))
return -ENXIO;
list_for_each_entry(dev, &card->devices, list) {
- if (dev->state == SNDRV_DEV_BUILD && dev->ops->dev_register) {
- if ((err = dev->ops->dev_register(dev)) < 0)
- return err;
- dev->state = SNDRV_DEV_REGISTERED;
- }
+ err = __snd_device_register(dev);
+ if (err < 0)
+ return err;
}
return 0;
}
@@ -228,7 +203,7 @@ int snd_device_disconnect_all(struct snd_card *card)
if (snd_BUG_ON(!card))
return -ENXIO;
list_for_each_entry_reverse(dev, &card->devices, list) {
- if (snd_device_disconnect(card, dev->device_data) < 0)
+ if (__snd_device_disconnect(dev) < 0)
err = -ENXIO;
}
return err;
@@ -238,17 +213,12 @@ int snd_device_disconnect_all(struct snd_card *card)
* release all the devices on the card.
* called from init.c
*/
-int snd_device_free_all(struct snd_card *card)
+void snd_device_free_all(struct snd_card *card)
{
struct snd_device *dev, *next;
- int ret = 0;
if (snd_BUG_ON(!card))
- return -ENXIO;
- list_for_each_entry_safe_reverse(dev, next, &card->devices, list) {
- int err = snd_device_free(card, dev->device_data);
- if (err < 0)
- ret = err;
- }
- return ret;
+ return;
+ list_for_each_entry_safe_reverse(dev, next, &card->devices, list)
+ __snd_device_free(dev);
}
@@ -454,10 +454,7 @@ static int snd_card_do_free(struct snd_card *card)
if (snd_mixer_oss_notify_callback)
snd_mixer_oss_notify_callback(card, SND_MIXER_OSS_NOTIFY_FREE);
#endif
- if (snd_device_free_all(card) < 0) {
- dev_err(card->dev, "unable to free all devices\n");
- /* Fatal, but this situation should never occur */
- }
+ snd_device_free_all(card);
if (card->private_free)
card->private_free(card);
snd_info_free_entry(card->proc_id);
A few code cleanups and optimizations. In addition, drop snd_device_disconnect() that isn't used at all, and drop the return values from snd_device_free*(). Another slight difference by this change is that now the device state will become always SNDRV_DEV_REGISTERED no matter whether dev_register ops is present or not. It's for better consistency. There should be no impact for the current tree, as the state isn't checked. Signed-off-by: Takashi Iwai <tiwai@suse.de> --- include/sound/core.h | 5 +- sound/core/device.c | 128 ++++++++++++++++++++------------------------------- sound/core/init.c | 5 +- 3 files changed, 52 insertions(+), 86 deletions(-)