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@xxxxxxxxxx> Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx> --- 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
