linux-kernel - [PATCH] driver core: Delete an unnecessary check before the function call "put

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Message-ID: <54D34DD3.2010106@users.sourceforge.net>
Date:	Thu, 05 Feb 2015 12:02:43 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] driver core: Delete an unnecessary check before the function
 call "put_device"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 5 Feb 2015 11:48:26 +0100

The put_device() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/base/core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 97e2baf..9c6536f 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1095,8 +1095,7 @@ done:
 	kobject_del(&dev->kobj);
  Error:
 	cleanup_device_parent(dev);
-	if (parent)
-		put_device(parent);
+	put_device(parent);
 name_error:
 	kfree(dev->p);
 	dev->p = NULL;
-- 
2.2.2

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