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From:   Guangbin Huang <huangguangbin2@huawei.com>
To:     <davem@davemloft.net>, <kuba@kernel.org>, <xie.he.0141@gmail.com>,
        <ms@dev.tdt.de>, <willemb@google.com>
CC:     <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <lipeng321@huawei.com>, <tanhuazhong@huawei.com>,
        <huangguangbin2@huawei.com>
Subject: [PATCH net-next 5/7] net: hdlc: replace comparison to NULL with "!param"
Date:   Tue, 1 Jun 2021 21:23:20 +0800
Message-ID: <1622553802-19903-6-git-send-email-huangguangbin2@huawei.com>
In-Reply-To: <1622553802-19903-1-git-send-email-huangguangbin2@huawei.com>
References: <1622553802-19903-1-git-send-email-huangguangbin2@huawei.com>
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From: Peng Li <lipeng321@huawei.com>

According to the chackpatch.pl, comparison to NULL could
be written "!param".

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 drivers/net/wan/hdlc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wan/hdlc.c b/drivers/net/wan/hdlc.c
index 13388ba..fefc732 100644
--- a/drivers/net/wan/hdlc.c
+++ b/drivers/net/wan/hdlc.c
@@ -148,7 +148,7 @@ int hdlc_open(struct net_device *dev)
 	       hdlc->carrier, hdlc->open);
 #endif
 
-	if (hdlc->proto == NULL)
+	if (!hdlc->proto)
 		return -ENOSYS;	/* no protocol attached */
 
 	if (hdlc->proto->open) {
@@ -284,7 +284,7 @@ int attach_hdlc_protocol(struct net_device *dev, struct hdlc_proto *proto,
 
 	if (size) {
 		dev_to_hdlc(dev)->state = kmalloc(size, GFP_KERNEL);
-		if (dev_to_hdlc(dev)->state == NULL) {
+		if (!dev_to_hdlc(dev)->state) {
 			module_put(proto->module);
 			return -ENOBUFS;
 		}
-- 
2.8.1