linux-kernel - [PATCH 3/3] driver core: remove devm_device_add

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Message-ID: <20230704131715.44454-8-gregkh@linuxfoundation.org>
Date:   Tue,  4 Jul 2023 14:17:19 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-hwmon@...r.kernel.org
Cc:     linux@...ck-us.net, samsagax@...il.com,
        linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: [PATCH 3/3] driver core: remove devm_device_add_groups()

There is no more in-kernel users of this function, and no driver should
ever be using it, so remove it from the kernel.

Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: "Rafael J. Wysocki" <rafael@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/base/core.c    | 45 ------------------------------------------
 include/linux/device.h |  2 --
 2 files changed, 47 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 3dff5037943e..94187c0b577d 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -2748,15 +2748,6 @@ static void devm_attr_group_remove(struct device *dev, void *res)
 	sysfs_remove_group(&dev->kobj, group);
 }
 
-static void devm_attr_groups_remove(struct device *dev, void *res)
-{
-	union device_attr_group_devres *devres = res;
-	const struct attribute_group **groups = devres->groups;
-
-	dev_dbg(dev, "%s: removing groups %p\n", __func__, groups);
-	sysfs_remove_groups(&dev->kobj, groups);
-}
-
 /**
  * devm_device_add_group - given a device, create a managed attribute group
  * @dev:	The device to create the group for
@@ -2789,42 +2780,6 @@ int devm_device_add_group(struct device *dev, const struct attribute_group *grp)
 }
 EXPORT_SYMBOL_GPL(devm_device_add_group);
 
-/**
- * devm_device_add_groups - create a bunch of managed attribute groups
- * @dev:	The device to create the group for
- * @groups:	The attribute groups to create, NULL terminated
- *
- * This function creates a bunch of managed attribute groups.  If an error
- * occurs when creating a group, all previously created groups will be
- * removed, unwinding everything back to the original state when this
- * function was called.  It will explicitly warn and error if any of the
- * attribute files being created already exist.
- *
- * Returns 0 on success or error code from sysfs_create_group on failure.
- */
-int devm_device_add_groups(struct device *dev,
-			   const struct attribute_group **groups)
-{
-	union device_attr_group_devres *devres;
-	int error;
-
-	devres = devres_alloc(devm_attr_groups_remove,
-			      sizeof(*devres), GFP_KERNEL);
-	if (!devres)
-		return -ENOMEM;
-
-	error = sysfs_create_groups(&dev->kobj, groups);
-	if (error) {
-		devres_free(devres);
-		return error;
-	}
-
-	devres->groups = groups;
-	devres_add(dev, devres);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(devm_device_add_groups);
-
 static int device_add_attrs(struct device *dev)
 {
 	const struct class *class = dev->class;
diff --git a/include/linux/device.h b/include/linux/device.h
index 66c13965153d..6dd087e4223d 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1164,8 +1164,6 @@ static inline void device_remove_group(struct device *dev,
 	return device_remove_groups(dev, groups);
 }
 
-int __must_check devm_device_add_groups(struct device *dev,
-					const struct attribute_group **groups);
 int __must_check devm_device_add_group(struct device *dev,
 				       const struct attribute_group *grp);
 
-- 
2.41.0