linux-kernel - [PATCH v1 4/6] ACPI: glue: Eliminate acpi_platform

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Date:   Mon, 12 Jul 2021 19:25:55 +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 4/6] ACPI: glue: Eliminate acpi_platform_notify()

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

Get rid of acpi_platform_notify() which is redundant and
make device_platform_notify() in the driver core call
acpi_device_notify() and acpi_device_notify_remove() directly.

No functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/acpi/glue.c  |   19 ++-----------------
 drivers/base/core.c  |    7 ++++---
 include/linux/acpi.h |   10 ++++------
 3 files changed, 10 insertions(+), 26 deletions(-)

Index: linux-pm/drivers/base/core.c
===================================================================
--- linux-pm.orig/drivers/base/core.c
+++ linux-pm/drivers/base/core.c
@@ -2005,9 +2005,10 @@ device_platform_notify(struct device *de
 {
 	int ret;
 
-	ret = acpi_platform_notify(dev, action);
-	if (ret)
-		return 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)
Index: linux-pm/include/linux/acpi.h
===================================================================
--- linux-pm.orig/include/linux/acpi.h
+++ linux-pm/include/linux/acpi.h
@@ -1380,13 +1380,11 @@ static inline int find_acpi_cpu_cache_to
 #endif
 
 #ifdef CONFIG_ACPI
-extern int acpi_platform_notify(struct device *dev, enum kobject_action action);
+extern void acpi_device_notify(struct device *dev);
+extern void acpi_device_notify_remove(struct device *dev);
 #else
-static inline int
-acpi_platform_notify(struct device *dev, enum kobject_action action)
-{
-	return 0;
-}
+static inline void acpi_device_notify(struct device *dev) { }
+static inline void acpi_device_notify_remove(struct device *dev) { }
 #endif
 
 #endif	/*_LINUX_ACPI_H*/
Index: linux-pm/drivers/acpi/glue.c
===================================================================
--- linux-pm.orig/drivers/acpi/glue.c
+++ linux-pm/drivers/acpi/glue.c
@@ -285,7 +285,7 @@ int acpi_unbind_one(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(acpi_unbind_one);
 
-static void acpi_device_notify(struct device *dev)
+void acpi_device_notify(struct device *dev)
 {
 	struct acpi_bus_type *type = acpi_get_bus_type(dev);
 	struct acpi_device *adev;
@@ -324,7 +324,7 @@ err:
 	dev_dbg(dev, "No ACPI support\n");
 }
 
-static void acpi_device_notify_remove(struct device *dev)
+void acpi_device_notify_remove(struct device *dev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(dev);
 	struct acpi_bus_type *type;
@@ -340,18 +340,3 @@ static void acpi_device_notify_remove(st
 
 	acpi_unbind_one(dev);
 }
-
-int acpi_platform_notify(struct device *dev, enum kobject_action action)
-{
-	switch (action) {
-	case KOBJ_ADD:
-		acpi_device_notify(dev);
-		break;
-	case KOBJ_REMOVE:
-		acpi_device_notify_remove(dev);
-		break;
-	default:
-		break;
-	}
-	return 0;
-}