netdev - [PATCH net-next] ieee802154: 6lowpan: remove unnecessary comparison

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Message-ID: <1588909928-58230-1-git-send-email-yangyingliang@huawei.com>
Date:   Fri, 8 May 2020 11:52:08 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <alex.aring@...il.com>, <stefan@...enfreihafen.org>,
        <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <linux-wpan@...r.kernel.org>,
        <yangyingliang@...wei.com>
Subject: [PATCH net-next] ieee802154: 6lowpan: remove unnecessary comparison

The type of dispatch is u8 which is always '<=' 0xff, so the
dispatch <= 0xff is always true, we can remove this comparison.

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 net/ieee802154/6lowpan/rx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ieee802154/6lowpan/rx.c b/net/ieee802154/6lowpan/rx.c
index ee17938..b34d050 100644
--- a/net/ieee802154/6lowpan/rx.c
+++ b/net/ieee802154/6lowpan/rx.c
@@ -240,7 +240,7 @@ static inline bool lowpan_is_reserved(u8 dispatch)
 	return ((dispatch >= 0x44 && dispatch <= 0x4F) ||
 		(dispatch >= 0x51 && dispatch <= 0x5F) ||
 		(dispatch >= 0xc8 && dispatch <= 0xdf) ||
-		(dispatch >= 0xe8 && dispatch <= 0xff));
+		dispatch >= 0xe8);
 }
 
 /* lowpan_rx_h_check checks on generic 6LoWPAN requirements
-- 
1.8.3