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 ee17938..b34d050 100644 (file)
--- 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