[PATCH 2/3] ASoC: core: Inline resume work back to resume function

[Cezary Rojewski]

From: Amadeusz Sławiński <amadeuszx.slawinski at linux.intel.com>

Commit 6ed2597883b1 ("ALSA: ASoC: Don't block system resume") introduced
deferred_resume_work for ASoC subsystem. While this allows for potential
speed up during boot on some slow devices, it doesn't allow to properly
propagate return values in case something failed during system resume.

Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski at linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski at intel.com>
---
 include/sound/soc.h  |  3 ---
 sound/soc/soc-core.c | 48 +++++++++++---------------------------------
 2 files changed, 12 insertions(+), 39 deletions(-)

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 37bbfc8b45cb..3465aa075afe 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1005,9 +1005,6 @@ struct snd_soc_card {
 
 #ifdef CONFIG_DEBUG_FS
 	struct dentry *debugfs_card_root;
-#endif
-#ifdef CONFIG_PM_SLEEP
-	struct work_struct deferred_resume_work;
 #endif
 	u32 pop_time;
 
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index a409fbed8f34..5f7e0735f0c1 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -643,17 +643,21 @@ int snd_soc_suspend(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(snd_soc_suspend);
 
-/*
- * deferred resume work, so resume can complete before we finished
- * setting our codec back up, which can be very slow on I2C
- */
-static void soc_resume_deferred(struct work_struct *work)
+/* powers up audio subsystem after a suspend */
+int snd_soc_resume(struct device *dev)
 {
-	struct snd_soc_card *card =
-			container_of(work, struct snd_soc_card,
-				     deferred_resume_work);
+	struct snd_soc_card *card = dev_get_drvdata(dev);
 	struct snd_soc_component *component;
 
+	/* If the card is not initialized yet there is nothing to do */
+	if (!card->instantiated)
+		return 0;
+
+	/* activate pins from sleep state */
+	for_each_card_components(card, component)
+		if (snd_soc_component_active(component))
+			pinctrl_pm_select_default_state(component->dev);
+
 	/*
 	 * our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
 	 * so userspace apps are blocked from touching us
@@ -686,40 +690,14 @@ static void soc_resume_deferred(struct work_struct *work)
 
 	/* userspace can access us now we are back as we were before */
 	snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
-}
-
-/* powers up audio subsystem after a suspend */
-int snd_soc_resume(struct device *dev)
-{
-	struct snd_soc_card *card = dev_get_drvdata(dev);
-	struct snd_soc_component *component;
-
-	/* If the card is not initialized yet there is nothing to do */
-	if (!card->instantiated)
-		return 0;
-
-	/* activate pins from sleep state */
-	for_each_card_components(card, component)
-		if (snd_soc_component_active(component))
-			pinctrl_pm_select_default_state(component->dev);
-
-	dev_dbg(dev, "ASoC: Scheduling resume work\n");
-	if (!schedule_work(&card->deferred_resume_work))
-		dev_err(dev, "ASoC: resume work item may be lost\n");
 
 	return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_resume);
 
-static void soc_resume_init(struct snd_soc_card *card)
-{
-	/* deferred resume work */
-	INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
-}
 #else
 #define snd_soc_suspend NULL
 #define snd_soc_resume NULL
-static inline void soc_resume_init(struct snd_soc_card *card) { }
 #endif
 
 static struct device_node
@@ -1968,8 +1946,6 @@ static int snd_soc_bind_card(struct snd_soc_card *card)
 
 	soc_init_card_debugfs(card);
 
-	soc_resume_init(card);
-
 	ret = snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
 					card->num_dapm_widgets);
 	if (ret < 0)
-- 
2.25.1