Both 'transport_header' and 'mac_header' are u16, which are never equal to '~0U'.
So need use '0xffff' instead of '~0U'. The related warning (with EXTRA_CFLAGS=-W ARCH=m68k for allmodconfig) include/linux/skbuff.h:1587:2: warning: comparison is always true due to limited range of data type [-Wtype-limits] ... Signed-off-by: Chen Gang <[email protected]> --- include/linux/skbuff.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 2e0ced1..03ba058 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1581,7 +1581,7 @@ static inline void skb_set_inner_mac_header(struct sk_buff *skb, } static inline bool skb_transport_header_was_set(const struct sk_buff *skb) { - return skb->transport_header != ~0U; + return skb->transport_header != 0xffff; } static inline unsigned char *skb_transport_header(const struct sk_buff *skb) @@ -1624,7 +1624,7 @@ static inline unsigned char *skb_mac_header(const struct sk_buff *skb) static inline int skb_mac_header_was_set(const struct sk_buff *skb) { - return skb->mac_header != ~0U; + return skb->mac_header != 0xffff; } static inline void skb_reset_mac_header(struct sk_buff *skb) -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
