linux-kernel - [PATCH] HID: Wacom: Delete an unnecessary check before the function call "kobject

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Message-ID: <563CDCAE.9080109@users.sourceforge.net>
Date:	Fri, 6 Nov 2015 18:00:30 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Jiri Kosina <jikos@...nel.org>, linux-input@...r.kernel.org
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] HID: Wacom: Delete an unnecessary check before the function
 call "kobject_put"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 6 Nov 2015 17:55:23 +0100

The kobject_put() 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/hid/wacom_sys.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 125e9d5..fb9b1d1 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -1353,8 +1353,7 @@ static void wacom_clean_inputs(struct wacom *wacom)
 		else
 			input_free_device(wacom->wacom_wac.pad_input);
 	}
-	if (wacom->remote_dir)
-		kobject_put(wacom->remote_dir);
+	kobject_put(wacom->remote_dir);
 	wacom->wacom_wac.pen_input = NULL;
 	wacom->wacom_wac.touch_input = NULL;
 	wacom->wacom_wac.pad_input = NULL;
-- 
2.6.2

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