linux-kernel - [PATCH v1 6/6] driver core: Split device_platform

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Date:   Mon, 12 Jul 2021 19:28:16 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "Krogerus, Heikki" <heikki.krogerus@...ux.intel.com>
Subject: [PATCH v1 6/6] driver core: Split device_platform_notify()

From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

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

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/base/core.c |   37 +++++++++++++++++--------------------
 1 file changed, 17 insertions(+), 20 deletions(-)

Index: linux-pm/drivers/base/core.c
===================================================================
--- linux-pm.orig/drivers/base/core.c
+++ linux-pm/drivers/base/core.c
@@ -2000,24 +2000,24 @@ static inline int device_is_not_partitio
 }
 #endif
 
-static int
-device_platform_notify(struct device *dev, enum kobject_action action)
+static void device_platform_notify(struct device *dev)
 {
-	if (action == KOBJ_ADD)
-		acpi_device_notify(dev);
-	else if (action == KOBJ_REMOVE)
-		acpi_device_notify_remove(dev);
-
-	if (action == KOBJ_ADD)
-		software_node_notify(dev);
-	else if (action == KOBJ_REMOVE)
-		software_node_notify_remove(dev);
+	acpi_device_notify(dev);
 
-	if (platform_notify && action == KOBJ_ADD)
+	software_node_notify(dev);
+
+	if (platform_notify)
 		platform_notify(dev);
-	else if (platform_notify_remove && action == KOBJ_REMOVE)
+}
+
+static void device_platform_notify_remove(struct device *dev)
+{
+	acpi_device_notify_remove(dev);
+
+	software_node_notify_remove(dev);
+
+	if (platform_notify_remove)
 		platform_notify_remove(dev);
-	return 0;
 }
 
 /**
@@ -3289,9 +3289,7 @@ int device_add(struct device *dev)
 	}
 
 	/* notify platform of device entry */
-	error = device_platform_notify(dev, KOBJ_ADD);
-	if (error)
-		goto platform_error;
+	device_platform_notify(dev);
 
 	error = device_create_file(dev, &dev_attr_uevent);
 	if (error)
@@ -3394,8 +3392,7 @@ done:
  SymlinkError:
 	device_remove_file(dev, &dev_attr_uevent);
  attrError:
-	device_platform_notify(dev, KOBJ_REMOVE);
-platform_error:
+	device_platform_notify_remove(dev);
 	kobject_uevent(&dev->kobj, KOBJ_REMOVE);
 	glue_dir = get_glue_dir(dev);
 	kobject_del(&dev->kobj);
@@ -3540,7 +3537,7 @@ void device_del(struct device *dev)
 	bus_remove_device(dev);
 	device_pm_remove(dev);
 	driver_deferred_probe_del(dev);
-	device_platform_notify(dev, KOBJ_REMOVE);
+	device_platform_notify_remove(dev);
 	device_remove_properties(dev);
 	device_links_purge(dev);