soc: apple: rtkit: Add devm_apple_rtkit_free()

To be used to free a RTKit interface while the associated device remains
alive. Probably useless since it's unknown how or if RTKit based
co-processors can be restarted.

Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

drivers/soc/apple/rtkit.c

@@ -958,6 +958,12 @@ struct apple_rtkit *devm_apple_rtkit_init(struct device *dev, void *cookie,
 }
 EXPORT_SYMBOL_GPL(devm_apple_rtkit_init);
 
+void devm_apple_rtkit_free(struct device *dev, struct apple_rtkit *rtk)
+{
+	devm_release_action(dev, apple_rtkit_free_wrapper, rtk);
+}
+EXPORT_SYMBOL_GPL(devm_apple_rtkit_free);
+
 MODULE_LICENSE("Dual MIT/GPL");
 MODULE_AUTHOR("Sven Peter <sven@svenpeter.dev>");
 MODULE_DESCRIPTION("Apple RTKit driver");

include/linux/soc/apple/rtkit.h

@@ -78,6 +78,13 @@ struct apple_rtkit;
 struct apple_rtkit *devm_apple_rtkit_init(struct device *dev, void *cookie,
 					  const char *mbox_name, int mbox_idx,
 					  const struct apple_rtkit_ops *ops);
+/*
+ * Frees internal RTKit state allocated by devm_apple_rtkit_init().
+ *
+ * @dev:	Pointer to the device node this coprocessor is assocated with
+ * @rtk:	Internal RTKit state initialized by devm_apple_rtkit_init()
+ */
+void devm_apple_rtkit_free(struct device *dev, struct apple_rtkit *rtk);
 
 /*
  * Non-devm version of devm_apple_rtkit_init. Must be freed with