From fb63d251d22c657a4a2acf0fc1f41ebc5dfa509a Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Thu, 30 Dec 2021 16:26:13 +0800
Subject: [PATCH] driver core: auxiliary bus: make remove function return void

mainline inclusion
from mainline-v5.11-rc1
commit 8142a46c50d2dd8160c42284e1044eed3bec0d18
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4O662
CVE: NA

-------------------------------------------------

There's an effort to move the remove() callback in the driver core to
not return an int, as nothing can be done if this function fails.  To
make that effort easier, make the aux bus remove function void to start
with so that no users have to be changed sometime in the future.

Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Ertman <david.m.ertman@intel.com>
Cc: Fred Oh <fred.oh@linux.intel.com>
Cc: Kiran Patil <kiran.patil@intel.com>
Cc: Leon Romanovsky <leonro@nvidia.com>
Cc: Martin Habets <mhabets@solarflare.com>
Cc: Parav Pandit <parav@mellanox.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Cc: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/X8ohB1ks1NK7kPop@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Yuanzheng Song <songyuanzheng@huawei.com>
Reviewed-by: Kefeng Wang<wangkefeng.wang@huawei.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
---
 Documentation/driver-api/auxiliary_bus.rst | 2 +-
 drivers/base/auxiliary.c                   | 5 ++---
 include/linux/auxiliary_bus.h              | 2 +-
 3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/Documentation/driver-api/auxiliary_bus.rst b/Documentation/driver-api/auxiliary_bus.rst
index 5dd7804631ef..2312506b0674 100644
--- a/Documentation/driver-api/auxiliary_bus.rst
+++ b/Documentation/driver-api/auxiliary_bus.rst
@@ -150,7 +150,7 @@ and shutdown notifications using the standard conventions.
 	struct auxiliary_driver {
 		int (*probe)(struct auxiliary_device *,
                              const struct auxiliary_device_id *id);
-		int (*remove)(struct auxiliary_device *);
+		void (*remove)(struct auxiliary_device *);
 		void (*shutdown)(struct auxiliary_device *);
 		int (*suspend)(struct auxiliary_device *, pm_message_t);
 		int (*resume)(struct auxiliary_device *);
diff --git a/drivers/base/auxiliary.c b/drivers/base/auxiliary.c
index eca36d6284d0..c44e85802b43 100644
--- a/drivers/base/auxiliary.c
+++ b/drivers/base/auxiliary.c
@@ -82,13 +82,12 @@ static int auxiliary_bus_remove(struct device *dev)
 {
 	struct auxiliary_driver *auxdrv = to_auxiliary_drv(dev->driver);
 	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
-	int ret = 0;
 
 	if (auxdrv->remove)
-		ret = auxdrv->remove(auxdev);
+		auxdrv->remove(auxdev);
 	dev_pm_domain_detach(dev, true);
 
-	return ret;
+	return 0;
 }
 
 static void auxiliary_bus_shutdown(struct device *dev)
diff --git a/include/linux/auxiliary_bus.h b/include/linux/auxiliary_bus.h
index 3580743d0e8d..d67b17606210 100644
--- a/include/linux/auxiliary_bus.h
+++ b/include/linux/auxiliary_bus.h
@@ -19,7 +19,7 @@ struct auxiliary_device {
 
 struct auxiliary_driver {
 	int (*probe)(struct auxiliary_device *auxdev, const struct auxiliary_device_id *id);
-	int (*remove)(struct auxiliary_device *auxdev);
+	void (*remove)(struct auxiliary_device *auxdev);
 	void (*shutdown)(struct auxiliary_device *auxdev);
 	int (*suspend)(struct auxiliary_device *auxdev, pm_message_t state);
 	int (*resume)(struct auxiliary_device *auxdev);
-- 
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