[PATCH 4/5] ASoC: SDCA: Unregister IRQ handlers on module remove

[Charles Keepax <ckeepax@opensource.cirrus.com>]

From: Richard Fitzgerald <rf@opensource.cirrus.com>

Ensure that all interrupt handlers are unregistered before the parent
regmap_irq is unregistered.

sdca_irq_cleanup() was only called from the component_remove(). If the
module was loaded and removed without ever being component probed the
FDL interrupts would not be unregistered and this would hit a WARN
when devm called regmap_del_irq_chip() during the removal of the
parent IRQ.

Fixes: 4e53116437e9 ("ASoC: SDCA: Fix errors in IRQ cleanup")
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
---
 include/sound/sdca_interrupts.h      |  4 ++--
 sound/soc/sdca/sdca_class_function.c | 10 +++++++++-
 sound/soc/sdca/sdca_interrupts.c     |  7 +++----
 3 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/include/sound/sdca_interrupts.h b/include/sound/sdca_interrupts.h
index b47003c3d26ef..a515cc3df0971 100644
--- a/include/sound/sdca_interrupts.h
+++ b/include/sound/sdca_interrupts.h
@@ -83,8 +83,8 @@ int sdca_irq_populate_early(struct device *dev, struct regmap *function_regmap,
 int sdca_irq_populate(struct sdca_function_data *function,
 		      struct snd_soc_component *component,
 		      struct sdca_interrupt_info *info);
-void sdca_irq_cleanup(struct sdca_function_data *function,
-		      struct snd_soc_component *component,
+void sdca_irq_cleanup(struct device *dev,
+		      struct sdca_function_data *function,
 		      struct sdca_interrupt_info *info);
 struct sdca_interrupt_info *sdca_irq_allocate(struct device *dev,
 					      struct regmap *regmap, int irq);
diff --git a/sound/soc/sdca/sdca_class_function.c b/sound/soc/sdca/sdca_class_function.c
index 61b725cd52056..31fc08d513077 100644
--- a/sound/soc/sdca/sdca_class_function.c
+++ b/sound/soc/sdca/sdca_class_function.c
@@ -203,7 +203,7 @@ static void class_function_component_remove(struct snd_soc_component *component)
 	struct class_function_drv *drv = snd_soc_component_get_drvdata(component);
 	struct sdca_class_drv *core = drv->core;
 
-	sdca_irq_cleanup(drv->function, component, core->irq_info);
+	sdca_irq_cleanup(component->dev, drv->function, core->irq_info);
 }
 
 static int class_function_set_jack(struct snd_soc_component *component,
@@ -417,6 +417,13 @@ static int class_function_probe(struct auxiliary_device *auxdev,
 	return 0;
 }
 
+static void class_function_remove(struct auxiliary_device *auxdev)
+{
+	struct class_function_drv *drv = auxiliary_get_drvdata(auxdev);
+
+	sdca_irq_cleanup(drv->dev, drv->function, drv->core->irq_info);
+}
+
 static int class_function_runtime_suspend(struct device *dev)
 {
 	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
@@ -569,6 +576,7 @@ static struct auxiliary_driver class_function_drv = {
 	},
 
 	.probe		= class_function_probe,
+	.remove		= class_function_remove,
 	.id_table	= class_function_id_table
 };
 module_auxiliary_driver(class_function_drv);
diff --git a/sound/soc/sdca/sdca_interrupts.c b/sound/soc/sdca/sdca_interrupts.c
index 0693209ffed1b..5cdabf8ae9da3 100644
--- a/sound/soc/sdca/sdca_interrupts.c
+++ b/sound/soc/sdca/sdca_interrupts.c
@@ -555,17 +555,16 @@ EXPORT_SYMBOL_NS_GPL(sdca_irq_populate, "SND_SOC_SDCA");
 
 /**
  * sdca_irq_cleanup - Free all the individual IRQs for an SDCA Function
+ * @sdev: Device pointer against which the sdca_interrupt_info was allocated.
  * @function: Pointer to the SDCA Function.
- * @component: Pointer to the ASoC component for the Function.
  * @info: Pointer to the SDCA interrupt info for this device.
  *
  * Typically this would be called from the driver for a single SDCA Function.
  */
-void sdca_irq_cleanup(struct sdca_function_data *function,
-		      struct snd_soc_component *component,
+void sdca_irq_cleanup(struct device *dev,
+		      struct sdca_function_data *function,
 		      struct sdca_interrupt_info *info)
 {
-	struct device *dev = component->dev;
 	int i;
 
 	guard(mutex)(&info->irq_lock);
-- 
2.47.3