[ALSA] Deprecate snd_card_free_in_thread()

Deprecated snd_card_free_in_thread(), replaced with
snd_card_free_when_closed().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

4 files changed, 7 insertions, 57 deletions

diff --git a/sound/core/init.c b/sound/core/init.c
index 5850d99d21e3..d7607a25acdf 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -81,8 +81,6 @@ static inline int init_info_for_card(struct snd_card *card)
 #define init_info_for_card(card)
 #endif
 
-static void snd_card_free_thread(void * __card);
-
 /**
  *  snd_card_new - create and initialize a soundcard structure
  *  @idx: card index (address) [0 ... (SNDRV_CARDS-1)]
@@ -145,7 +143,6 @@ struct snd_card *snd_card_new(int idx, const char *xid,
         INIT_LIST_HEAD(&card->ctl_files);
         spin_lock_init(&card->files_lock);
         init_waitqueue_head(&card->shutdown_sleep);
-        INIT_WORK(&card->free_workq, snd_card_free_thread, card);
 #ifdef CONFIG_PM
         mutex_init(&card->power_lock);
         init_waitqueue_head(&card->power_sleep);
@@ -413,53 +410,6 @@ int snd_card_free(struct snd_card *card)
 
 EXPORT_SYMBOL(snd_card_free);
 
-static void snd_card_free_thread(void * __card)
-{
-        struct snd_card *card = __card;
-        struct module * module = card->module;
-
-        if (!try_module_get(module)) {
-                snd_printk(KERN_ERR "unable to lock toplevel module for card %i in free thread\n", card->number);
-                module = NULL;
-        }
-
-        snd_card_free(card);
-
-        module_put(module);
-}
-
-/**
- *  snd_card_free_in_thread - call snd_card_free() in thread
- *  @card: soundcard structure
- *
- *  This function schedules the call of snd_card_free() function in a
- *  work queue.  When all devices are released (non-busy), the work
- *  is woken up and calls snd_card_free().
- *
- *  When a card can be disconnected at any time by hotplug service,
- *  this function should be used in disconnect (or detach) callback
- *  instead of calling snd_card_free() directly.
- *  
- *  Returns - zero otherwise a negative error code if the start of thread failed.
- */
-int snd_card_free_in_thread(struct snd_card *card)
-{
-        if (card->files == NULL) {
-                snd_card_free(card);
-                return 0;
-        }
-
-        if (schedule_work(&card->free_workq))
-                return 0;
-
-        snd_printk(KERN_ERR "schedule_work() failed in snd_card_free_in_thread for card %i\n", card->number);
-        /* try to free the structure immediately */
-        snd_card_free(card);
-        return -EFAULT;
-}
-
-EXPORT_SYMBOL(snd_card_free_in_thread);
-
 static void choose_default_id(struct snd_card *card)
 {
         int i, len, idx_flag = 0, loops = SNDRV_CARDS;
@@ -742,9 +692,9 @@ EXPORT_SYMBOL(snd_card_file_add);
  *
  *  This function removes the file formerly added to the card via
  *  snd_card_file_add() function.
- *  If all files are removed and the release of the card is
- *  scheduled, it will wake up the the thread to call snd_card_free()
- *  (see snd_card_free_in_thread() function).
+ *  If all files are removed and snd_card_free_when_closed() was
+ *  called beforehand, it processes the pending release of
+ *  resources.
  *
  *  Returns zero or a negative error code.
  */
diff --git a/sound/drivers/mpu401/mpu401.c b/sound/drivers/mpu401/mpu401.c
index 17cc105b26fc..2de181ad0b05 100644
--- a/sound/drivers/mpu401/mpu401.c
+++ b/sound/drivers/mpu401/mpu401.c
@@ -211,7 +211,7 @@ static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev)
         struct snd_card *card = (struct snd_card *) pnp_get_drvdata(dev);
 
         snd_card_disconnect(card);
-        snd_card_free_in_thread(card);
+        snd_card_free_when_closed(card);
 }
 
 static struct pnp_driver snd_mpu401_pnp_driver = {
diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf.c b/sound/pcmcia/pdaudiocf/pdaudiocf.c
index 1c09e5f49da8..fd3590fcaedb 100644
--- a/sound/pcmcia/pdaudiocf/pdaudiocf.c
+++ b/sound/pcmcia/pdaudiocf/pdaudiocf.c
@@ -206,7 +206,7 @@ static void snd_pdacf_detach(struct pcmcia_device *link)
                 snd_pdacf_powerdown(chip);
         chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
         snd_card_disconnect(chip->card);
-        snd_card_free_in_thread(chip->card);
+        snd_card_free_when_closed(chip->card);
 }
 
 /*
diff --git a/sound/pcmcia/vx/vxpocket.c b/sound/pcmcia/vx/vxpocket.c
index cafe6640cc1a..76c85cffb40e 100644
--- a/sound/pcmcia/vx/vxpocket.c
+++ b/sound/pcmcia/vx/vxpocket.c
@@ -65,7 +65,7 @@ static void vxpocket_release(struct pcmcia_device *link)
 }
 
 /*
- * destructor, called from snd_card_free_in_thread()
+ * destructor, called from snd_card_free_when_closed()
  */
 static int snd_vxpocket_dev_free(struct snd_device *device)
 {
@@ -363,7 +363,7 @@ static void vxpocket_detach(struct pcmcia_device *link)
         chip->chip_status |= VX_STAT_IS_STALE; /* to be sure */
         snd_card_disconnect(chip->card);
         vxpocket_release(link);
-        snd_card_free_in_thread(chip->card);
+        snd_card_free_when_closed(chip->card);
 }
 
 /*