linux-kernel - [PATCH] staging/wlan-ng/hfa384x: Delete an unnecessary check before the macro call “dev_kfree

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Date:   Wed, 21 Aug 2019 14:40:38 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     devel@...verdev.osuosl.org,
        Branden Bonaby <brandonbonaby94@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Himadri Pandya <himadri18.07@...il.com>,
        Nishka Dasgupta <nishkadg.linux@...il.com>,
        Tim Collier <osdevtc@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] staging/wlan-ng/hfa384x: Delete an unnecessary check before the macro call “dev_kfree_skb”

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 21 Aug 2019 14:30:30 +0200

The dev_kfree_skb() function performs also input parameter validation.
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/staging/wlan-ng/hfa384x_usb.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c
index 28d372a0663a..54f631c4155a 100644
--- a/drivers/staging/wlan-ng/hfa384x_usb.c
+++ b/drivers/staging/wlan-ng/hfa384x_usb.c
@@ -3070,9 +3070,7 @@ static void hfa384x_usbin_callback(struct urb *urb)
 	}			/* switch */

 exit:
-
-	if (skb)
-		dev_kfree_skb(skb);
+	dev_kfree_skb(skb);
 }

 /*----------------------------------------------------------------
--
2.23.0