linux-kernel - [PATCH] driver core: Remove unused platform_notify, platform_notify

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Date: Mon, 25 Mar 2024 17:14:09 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: "Rafael J . Wysocki" <rafael@...nel.org>,
	linux-kernel@...r.kernel.org,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH] driver core: Remove unused platform_notify, platform_notify_remove

From: Bjorn Helgaas <bhelgaas@...gle.com>

The "platform_notify" and "platform_notify_remove" hooks have been unused
since 00ba9357d189 ("ARM: ixp4xx: Drop custom DMA coherency and bouncing").

Remove "platform_notify" and "platform_notify_remove".  No functional
change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Linus Walleij <linus.walleij@...aro.org>
---
 drivers/base/core.c    |  8 --------
 include/linux/device.h | 11 -----------
 2 files changed, 19 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index b93f3c5716ae..78dfa74ee18b 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -2331,8 +2331,6 @@ static void fw_devlink_link_device(struct device *dev)
 
 /* Device links support end. */
 
-int (*platform_notify)(struct device *dev) = NULL;
-int (*platform_notify_remove)(struct device *dev) = NULL;
 static struct kobject *dev_kobj;
 
 /* /sys/dev/char */
@@ -2380,16 +2378,10 @@ static void device_platform_notify(struct device *dev)
 	acpi_device_notify(dev);
 
 	software_node_notify(dev);
-
-	if (platform_notify)
-		platform_notify(dev);
 }
 
 static void device_platform_notify_remove(struct device *dev)
 {
-	if (platform_notify_remove)
-		platform_notify_remove(dev);
-
 	software_node_notify_remove(dev);
 
 	acpi_device_notify_remove(dev);
diff --git a/include/linux/device.h b/include/linux/device.h
index 97c4b046c09d..c515ba5756e4 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1206,17 +1206,6 @@ int __must_check devm_device_add_groups(struct device *dev,
 int __must_check devm_device_add_group(struct device *dev,
 				       const struct attribute_group *grp);
 
-/*
- * Platform "fixup" functions - allow the platform to have their say
- * about devices and actions that the general device layer doesn't
- * know about.
- */
-/* Notify platform of device discovery */
-extern int (*platform_notify)(struct device *dev);
-
-extern int (*platform_notify_remove)(struct device *dev);
-
-
 /*
  * get_device - atomically increment the reference count for the device.
  *
-- 
2.34.1