linux-kernel - [PATCH][V2] drivers/base/cpu: remove redundant assignment of variable retval

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Date:   Thu, 18 Feb 2021 20:28:37 +0000
From:   Colin King <colin.king@...onical.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][V2] drivers/base/cpu: remove redundant assignment of variable retval

From: Colin Ian King <colin.king@...onical.com>

The variable retval is being initialized with a value that is never read
and it is being updated later with a new value.  Clean this up by
initializing retval to -ENOMEM and remove the assignment to retval
on the !dev failure path.

Kudos to Rafael for the improved fix suggestion.

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
V1: Remove initialization of retval
V2: Initialiation of retval with -ENOMEM and remove assignment in
    !dev failure path.
---
 drivers/base/cpu.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 8f1d6569564c..2b9e41377a07 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -409,13 +409,11 @@ __cpu_device_create(struct device *parent, void *drvdata,
 		    const char *fmt, va_list args)
 {
 	struct device *dev = NULL;
-	int retval = -ENODEV;
+	int retval = -ENOMEM;
 
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-	if (!dev) {
-		retval = -ENOMEM;
+	if (!dev)
 		goto error;
-	}
 
 	device_initialize(dev);
 	dev->parent = parent;
-- 
2.30.0