From: Yang Yingliang <yangyingliang@huawei.com>
Date: Fri, 8 May 2020 03:52:08 +0000 (+0800)
Subject: ieee802154: 6lowpan: remove unnecessary comparison
X-Git-Tag: rel_imx_5.10.35_2.0.0-somdevices.0~2054^2~248
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=3712c1c2ef2a0cbca633d150e568deb8f63a6f29;p=linux.git

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@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/net/ieee802154/6lowpan/rx.c b/net/ieee802154/6lowpan/rx.c
index ee179380a766..b34d050c9687 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