linux-kernel - [PATCH 4/6] net: nci: remove redundant null pointer check before kfree

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Message-ID: <1537436266-41955-5-git-send-email-zhongjiang@huawei.com>
Date:   Thu, 20 Sep 2018 17:37:44 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     <davem@...emloft.net>
CC:     <kuznet@....inr.ac.ru>, <yoshfuji@...ux-ipv6.org>,
        <santosh@...lsio.com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 4/6] net: nci: remove redundant null pointer check before kfree_skb

kfree_skb has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree_skb.

Signed-off-by: zhong jiang <zhongjiang@...wei.com>
---
 net/nfc/nci/uart.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/nfc/nci/uart.c b/net/nfc/nci/uart.c
index a66f102..4503937 100644
--- a/net/nfc/nci/uart.c
+++ b/net/nfc/nci/uart.c
@@ -192,10 +192,8 @@ static void nci_uart_tty_close(struct tty_struct *tty)
 	if (!nu)
 		return;
 
-	if (nu->tx_skb)
-		kfree_skb(nu->tx_skb);
-	if (nu->rx_skb)
-		kfree_skb(nu->rx_skb);
+	kfree_skb(nu->tx_skb);
+	kfree_skb(nu->rx_skb);
 
 	skb_queue_purge(&nu->tx_q);
 
-- 
1.7.12.4