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From:   "Rafael J. Wysocki" <rjw@rjwysocki.net>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     "Rafael J. Wysocki" <rafael@kernel.org>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Linux ACPI <linux-acpi@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        "Krogerus, Heikki" <heikki.krogerus@linux.intel.com>
Subject: [PATCH v1 5/6] software nodes: Split software_node_notify()
Date:   Mon, 12 Jul 2021 19:27:12 +0200
Message-ID: <5627033.MhkbZ0Pkbq@kreacher>
In-Reply-To: <2780027.e9J7NaK4W3@kreacher>
References: <2780027.e9J7NaK4W3@kreacher>
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From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Split software_node_notify_remove) out of software_node_notify()
and make device_platform_notify() call the latter on device addition
and the former on device removal.

While at it, put the headers of the above functions into base.h,
because they don't need to be present in a global header file.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/base/base.h      |    3 ++
 drivers/base/core.c      |    9 +++---
 drivers/base/swnode.c    |   61 ++++++++++++++++++++++++-----------------------
 include/linux/property.h |    2 -
 4 files changed, 39 insertions(+), 36 deletions(-)

Index: linux-pm/drivers/base/swnode.c
===================================================================
--- linux-pm.orig/drivers/base/swnode.c
+++ linux-pm/drivers/base/swnode.c
@@ -11,6 +11,8 @@
 #include <linux/property.h>
 #include <linux/slab.h>
 
+#include "base.h"
+
 struct swnode {
 	struct kobject kobj;
 	struct fwnode_handle fwnode;
@@ -1053,7 +1055,7 @@ int device_add_software_node(struct devi
 	 * balance.
 	 */
 	if (device_is_registered(dev))
-		software_node_notify(dev, KOBJ_ADD);
+		software_node_notify(dev);
 
 	return 0;
 }
@@ -1074,7 +1076,8 @@ void device_remove_software_node(struct
 		return;
 
 	if (device_is_registered(dev))
-		software_node_notify(dev, KOBJ_REMOVE);
+		software_node_notify_remove(dev);
+
 	set_secondary_fwnode(dev, NULL);
 	kobject_put(&swnode->kobj);
 }
@@ -1117,44 +1120,44 @@ int device_create_managed_software_node(
 }
 EXPORT_SYMBOL_GPL(device_create_managed_software_node);
 
-int software_node_notify(struct device *dev, unsigned long action)
+void software_node_notify(struct device *dev)
 {
 	struct swnode *swnode;
 	int ret;
 
 	swnode = dev_to_swnode(dev);
 	if (!swnode)
-		return 0;
+		return;
 
-	switch (action) {
-	case KOBJ_ADD:
-		ret = sysfs_create_link(&dev->kobj, &swnode->kobj, "software_node");
-		if (ret)
-			break;
+	ret = sysfs_create_link(&dev->kobj, &swnode->kobj, "software_node");
+	if (ret)
+		return;
 
-		ret = sysfs_create_link(&swnode->kobj, &dev->kobj,
-					dev_name(dev));
-		if (ret) {
-			sysfs_remove_link(&dev->kobj, "software_node");
-			break;
-		}
-		kobject_get(&swnode->kobj);
-		break;
-	case KOBJ_REMOVE:
-		sysfs_remove_link(&swnode->kobj, dev_name(dev));
+	ret = sysfs_create_link(&swnode->kobj, &dev->kobj, dev_name(dev));
+	if (ret) {
 		sysfs_remove_link(&dev->kobj, "software_node");
-		kobject_put(&swnode->kobj);
-
-		if (swnode->managed) {
-			set_secondary_fwnode(dev, NULL);
-			kobject_put(&swnode->kobj);
-		}
-		break;
-	default:
-		break;
+		return;
 	}
 
-	return 0;
+	kobject_get(&swnode->kobj);
+}
+
+void software_node_notify_remove(struct device *dev)
+{
+	struct swnode *swnode;
+
+	swnode = dev_to_swnode(dev);
+	if (!swnode)
+		return;
+
+	sysfs_remove_link(&swnode->kobj, dev_name(dev));
+	sysfs_remove_link(&dev->kobj, "software_node");
+	kobject_put(&swnode->kobj);
+
+	if (swnode->managed) {
+		set_secondary_fwnode(dev, NULL);
+		kobject_put(&swnode->kobj);
+	}
 }
 
 static int __init software_node_init(void)
Index: linux-pm/include/linux/property.h
===================================================================
--- linux-pm.orig/include/linux/property.h
+++ linux-pm/include/linux/property.h
@@ -484,8 +484,6 @@ void software_node_unregister_node_group
 int software_node_register(const struct software_node *node);
 void software_node_unregister(const struct software_node *node);
 
-int software_node_notify(struct device *dev, unsigned long action);
-
 struct fwnode_handle *
 fwnode_create_software_node(const struct property_entry *properties,
 			    const struct fwnode_handle *parent);
Index: linux-pm/drivers/base/core.c
===================================================================
--- linux-pm.orig/drivers/base/core.c
+++ linux-pm/drivers/base/core.c
@@ -2003,16 +2003,15 @@ static inline int device_is_not_partitio
 static int
 device_platform_notify(struct device *dev, enum kobject_action action)
 {
-	int ret;
-
 	if (action == KOBJ_ADD)
 		acpi_device_notify(dev);
 	else if (action == KOBJ_REMOVE)
 		acpi_device_notify_remove(dev);
 
-	ret = software_node_notify(dev, action);
-	if (ret)
-		return ret;
+	if (action == KOBJ_ADD)
+		software_node_notify(dev);
+	else if (action == KOBJ_REMOVE)
+		software_node_notify_remove(dev);
 
 	if (platform_notify && action == KOBJ_ADD)
 		platform_notify(dev);
Index: linux-pm/drivers/base/base.h
===================================================================
--- linux-pm.orig/drivers/base/base.h
+++ linux-pm/drivers/base/base.h
@@ -202,3 +202,6 @@ int devtmpfs_delete_node(struct device *
 static inline int devtmpfs_create_node(struct device *dev) { return 0; }
 static inline int devtmpfs_delete_node(struct device *dev) { return 0; }
 #endif
+
+void software_node_notify(struct device *dev);
+void software_node_notify_remove(struct device *dev);