[PATCH 6/8] ASoC: SDCA: Add missing destroy for HID device

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

The SDCA code is currently missing a cleanup for HID devices when the
drivers are unbound. Add the missing HID cleanup as part of the IRQ
cleanup to mirror when the HID device is created.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
---
 include/sound/sdca_hid.h         |  5 +++++
 sound/soc/sdca/sdca_hid.c        | 12 ++++++++++++
 sound/soc/sdca/sdca_interrupts.c |  2 ++
 3 files changed, 19 insertions(+)

diff --git a/include/sound/sdca_hid.h b/include/sound/sdca_hid.h
index 83d1c7768133b..848081df3e4ec 100644
--- a/include/sound/sdca_hid.h
+++ b/include/sound/sdca_hid.h
@@ -17,6 +17,7 @@ struct sdca_interrupt;
 #if IS_ENABLED(CONFIG_SND_SOC_SDCA_HID)
 
 int sdca_add_hid_device(struct sdca_interrupt *interrupt);
+void sdca_destroy_hid_device(struct sdca_interrupt *interrupt);
 int sdca_hid_process_report(struct sdca_interrupt *interrupt);
 
 #else
@@ -26,6 +27,10 @@ static inline int sdca_add_hid_device(struct sdca_interrupt *interrupt)
 	return 0;
 }
 
+static inline void sdca_destroy_hid_device(struct sdca_interrupt *interrupt)
+{
+}
+
 static inline int sdca_hid_process_report(struct sdca_interrupt *interrupt)
 {
 	return 0;
diff --git a/sound/soc/sdca/sdca_hid.c b/sound/soc/sdca/sdca_hid.c
index 5000d73657b41..514f895bd90de 100644
--- a/sound/soc/sdca/sdca_hid.c
+++ b/sound/soc/sdca/sdca_hid.c
@@ -122,6 +122,18 @@ int sdca_add_hid_device(struct sdca_interrupt *interrupt)
 }
 EXPORT_SYMBOL_NS(sdca_add_hid_device, "SND_SOC_SDCA");
 
+/**
+ * sdca_destroy_hid_device - destroy the HID device
+ * @interrupt: Pointer to the SDCA interrupt information structure.
+ */
+void sdca_destroy_hid_device(struct sdca_interrupt *interrupt)
+{
+	struct hid_device *hid = interrupt->priv;
+
+	hid_destroy_device(hid);
+}
+EXPORT_SYMBOL_NS(sdca_destroy_hid_device, "SND_SOC_SDCA");
+
 /**
  * sdca_hid_process_report - read a HID event from the device and report
  * @interrupt: Pointer to the SDCA interrupt information structure.
diff --git a/sound/soc/sdca/sdca_interrupts.c b/sound/soc/sdca/sdca_interrupts.c
index 71037189a057c..7aebc721a847f 100644
--- a/sound/soc/sdca/sdca_interrupts.c
+++ b/sound/soc/sdca/sdca_interrupts.c
@@ -487,6 +487,8 @@ int sdca_irq_populate_early(struct device *dev, struct regmap *regmap,
 				}
 				break;
 			case SDCA_CTL_TYPE_S(HIDE, HIDTX_CURRENTOWNER):
+				interrupt->free_priv = sdca_destroy_hid_device;
+
 				ret = sdca_add_hid_device(interrupt);
 				if (ret)
 					return ret;
-- 
2.47.3