1 files changed, 34 insertions, 13 deletions

diff --git a/sound/core/device.c b/sound/core/device.c
index 41bec3075ae5..8918838b1999 100644
--- a/sound/core/device.c
+++ b/sound/core/device.c
@@ -50,10 +50,8 @@ int snd_device_new(struct snd_card *card, enum snd_device_type type,
         if (snd_BUG_ON(!card || !device_data || !ops))
                 return -ENXIO;
         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-        if (dev == NULL) {
-                dev_err(card->dev, "Cannot allocate device, type=%d\n", type);
+        if (!dev)
                 return -ENOMEM;
-        }
         INIT_LIST_HEAD(&dev->list);
         dev->card = card;
         dev->type = type;
@@ -73,7 +71,7 @@ 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)
+static void __snd_device_disconnect(struct snd_device *dev)
 {
         if (dev->state == SNDRV_DEV_REGISTERED) {
                 if (dev->ops->dev_disconnect &&
@@ -81,7 +79,6 @@ static int __snd_device_disconnect(struct snd_device *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)
@@ -109,6 +106,34 @@ static struct snd_device *look_for_dev(struct snd_card *card, void *device_data)
 }
 
 /**
+ * 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.
+ */
+void snd_device_disconnect(struct snd_card *card, void *device_data)
+{
+        struct snd_device *dev;
+
+        if (snd_BUG_ON(!card || !device_data))
+                return;
+        dev = look_for_dev(card, device_data);
+        if (dev)
+                __snd_device_disconnect(dev);
+        else
+                dev_dbg(card->dev, "device disconnect %p (from %pF), not found\n",
+                        device_data, __builtin_return_address(0));
+}
+EXPORT_SYMBOL_GPL(snd_device_disconnect);
+
+/**
  * snd_device_free - release the device from the card
  * @card: the card instance
  * @device_data: the data pointer to release
@@ -195,18 +220,14 @@ int snd_device_register_all(struct snd_card *card)
  * disconnect all the devices on the card.
  * called from init.c
  */
-int snd_device_disconnect_all(struct snd_card *card)
+void snd_device_disconnect_all(struct snd_card *card)
 {
         struct snd_device *dev;
-        int err = 0;
 
         if (snd_BUG_ON(!card))
-                return -ENXIO;
-        list_for_each_entry_reverse(dev, &card->devices, list) {
-                if (__snd_device_disconnect(dev) < 0)
-                        err = -ENXIO;
-        }
-        return err;
+                return;
+        list_for_each_entry_reverse(dev, &card->devices, list)
+                __snd_device_disconnect(dev);
 }
 
 /*