ASoC: Use card field to indicate whether a component is bound

Use the card field of a component to indicate whether it is bound or not.
This makes a certain sense given that the field contains the card the
component is bound to and a component can only be bound to one card at a
time. And it also requires to unset the card field when the component is
unbound from the card.

This makes the probded flag redundant and it can be removed.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc.h

@@ -758,7 +758,6 @@ struct snd_soc_component {
 
 	unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */
 	unsigned int registered_as_component:1;
-	unsigned int probed:1;
 
 	struct list_head list;
 

sound/soc/soc-core.c

@@ -978,7 +978,7 @@ static int soc_bind_dai_link(struct snd_soc_card *card, int num)
 
 static void soc_remove_component(struct snd_soc_component *component)
 {
-	if (!component->probed)
+	if (!component->card)
 		return;
 
 	/* This is a HACK and will be removed soon */
@@ -991,7 +991,7 @@ static void soc_remove_component(struct snd_soc_component *component)
 	snd_soc_dapm_free(snd_soc_component_get_dapm(component));
 
 	soc_cleanup_component_debugfs(component);
-	component->probed = 0;
+	component->card = NULL;
 	module_put(component->dev->driver->owner);
 }
 
@@ -1105,7 +1105,7 @@ static int soc_probe_component(struct snd_soc_card *card,
 	if (!strcmp(component->name, "snd-soc-dummy"))
 		return 0;
 
-	if (component->probed) {
+	if (component->card) {
 		if (component->card != card) {
 			dev_err(component->dev,
 				"Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
@@ -1115,13 +1115,13 @@ static int soc_probe_component(struct snd_soc_card *card,
 		return 0;
 	}
 
+	if (!try_module_get(component->dev->driver->owner))
+		return -ENODEV;
+
 	component->card = card;
 	dapm->card = card;
 	soc_set_name_prefix(card, component);
 
-	if (!try_module_get(component->dev->driver->owner))
-		return -ENODEV;
-
 	soc_init_component_debugfs(component);
 
 	if (component->dapm_widgets) {
@@ -1165,7 +1165,6 @@ static int soc_probe_component(struct snd_soc_card *card,
 		snd_soc_dapm_add_routes(dapm, component->dapm_routes,
 					component->num_dapm_routes);
 
-	component->probed = 1;
 	list_add(&dapm->list, &card->dapm_list);
 
 	/* This is a HACK and will be removed soon */
@@ -1176,6 +1175,7 @@ static int soc_probe_component(struct snd_soc_card *card,
 
 err_probe:
 	soc_cleanup_component_debugfs(component);
+	component->card = NULL;
 	module_put(component->dev->driver->owner);
 
 	return ret;
@@ -1459,7 +1459,7 @@ static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
 		rtd->dev_registered = 0;
 	}
 
-	if (component && component->probed)
+	if (component)
 		soc_remove_component(component);
 }