linux-kernel - [PATCH -next 3/3] devtmpfs: remove return value of devtmpfs_*_node() & devtmpfs_submit

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Message-ID: <20230202031046.1224338-4-xialonglong1@huawei.com>
Date:   Thu, 2 Feb 2023 03:10:46 +0000
From:   Longlong Xia <xialonglong1@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <chenwandun@...wei.com>, <wangkefeng.wang@...wei.com>,
        <sunnanyong@...wei.com>
Subject: [PATCH -next 3/3] devtmpfs: remove return value of devtmpfs_*_node() & devtmpfs_submit_req()

Because the return value of devtmpfs_*_node() and devtmpfs_submit_req()
are not used by their callers, change them into void functions.

Signed-off-by: Longlong Xia <xialonglong1@...wei.com>
---
 drivers/base/base.h     |  8 ++++----
 drivers/base/devtmpfs.c | 20 +++++++++-----------
 2 files changed, 13 insertions(+), 15 deletions(-)

diff --git a/drivers/base/base.h b/drivers/base/base.h
index 2208af509ce8..ffb7321e39cf 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -198,11 +198,11 @@ extern void fw_devlink_drivers_done(void);
 void device_pm_move_to_tail(struct device *dev);
 
 #ifdef CONFIG_DEVTMPFS
-int devtmpfs_create_node(struct device *dev);
-int devtmpfs_delete_node(struct device *dev);
+void devtmpfs_create_node(struct device *dev);
+void devtmpfs_delete_node(struct device *dev);
 #else
-static inline int devtmpfs_create_node(struct device *dev) { return 0; }
-static inline int devtmpfs_delete_node(struct device *dev) { return 0; }
+static inline void devtmpfs_create_node(struct device *dev) { }
+static inline void devtmpfs_delete_node(struct device *dev) { }
 #endif
 
 void software_node_notify(struct device *dev);
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 77ca64f708ce..3c4e61c99b77 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -103,7 +103,7 @@ static inline int is_blockdev(struct device *dev)
 static inline int is_blockdev(struct device *dev) { return 0; }
 #endif
 
-static int devtmpfs_submit_req(struct req *req, const char *tmp)
+static void devtmpfs_submit_req(struct req *req, const char *tmp)
 {
 	init_completion(&req->done);
 
@@ -116,24 +116,22 @@ static int devtmpfs_submit_req(struct req *req, const char *tmp)
 	wait_for_completion(&req->done);
 
 	kfree(tmp);
-
-	return req->err;
 }
 
-int devtmpfs_create_node(struct device *dev)
+void devtmpfs_create_node(struct device *dev)
 {
 	const char *tmp = NULL;
 	struct req req;
 
 	if (!thread)
-		return 0;
+		return;
 
 	req.mode = 0;
 	req.uid = GLOBAL_ROOT_UID;
 	req.gid = GLOBAL_ROOT_GID;
 	req.name = device_get_devnode(dev, &req.mode, &req.uid, &req.gid, &tmp);
 	if (!req.name)
-		return -ENOMEM;
+		return;
 
 	if (req.mode == 0)
 		req.mode = 0600;
@@ -144,25 +142,25 @@ int devtmpfs_create_node(struct device *dev)
 
 	req.dev = dev;
 
-	return devtmpfs_submit_req(&req, tmp);
+	devtmpfs_submit_req(&req, tmp);
 }
 
-int devtmpfs_delete_node(struct device *dev)
+void devtmpfs_delete_node(struct device *dev)
 {
 	const char *tmp = NULL;
 	struct req req;
 
 	if (!thread)
-		return 0;
+		return;
 
 	req.name = device_get_devnode(dev, NULL, NULL, NULL, &tmp);
 	if (!req.name)
-		return -ENOMEM;
+		return;
 
 	req.mode = 0;
 	req.dev = dev;
 
-	return devtmpfs_submit_req(&req, tmp);
+	devtmpfs_submit_req(&req, tmp);
 }
 
 static int dev_mkdir(const char *name, umode_t mode)
-- 
2.25.1