diff options
| author | Chen Gang <gang.chen@asianux.com> | 2013-04-25 00:49:55 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-19 11:38:33 -0700 |
| commit | 0523cdce095dfa615f9c7308603bb11e99179e3c (patch) | |
| tree | 91fe3c29c4971d3af72061b227d3e145feea41bc | |
| parent | ce5cd52ae112a367ea9c38b1727d99349802a00d (diff) | |
net: mac802154: comparision issue of type cast, finding by EXTRA_CFLAGS=-W
[ Upstream commit 2c1bbbffa0b644fab4f91878cde0c2e8f52e2dcc ]
Change MAC802154_CHAN_NONE from ~(u8)0 to 0xff, or the comparison in
mac802154_wpan_xmit() for ``chan == MAC802154_CHAN_NONE'' will not
succeed.
This bug can be boiled down to ``u8 foo = 0xff; if (foo == ~(u8)0)
[...] else [...]'' where the condition will always take the else
branch.
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/mac802154/mac802154.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mac802154/mac802154.h b/net/mac802154/mac802154.h index a4dcaf1dd4b..703c1210d22 100644 --- a/net/mac802154/mac802154.h +++ b/net/mac802154/mac802154.h @@ -90,7 +90,7 @@ struct mac802154_sub_if_data { #define MAC802154_MAX_XMIT_ATTEMPTS 3 -#define MAC802154_CHAN_NONE (~(u8)0) /* No channel is assigned */ +#define MAC802154_CHAN_NONE 0xff /* No channel is assigned */ extern struct ieee802154_reduced_mlme_ops mac802154_mlme_reduced; extern struct ieee802154_mlme_ops mac802154_mlme_wpan; |