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| author | Chen Gang <gang.chen@asianux.com> | 2013-04-25 00:49:55 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-04-29 12:29:04 -0400 |
| commit | 2c1bbbffa0b644fab4f91878cde0c2e8f52e2dcc (patch) | |
| tree | 2b9efab1d5155c58fe2fb76116ec01f1df64161d /net/mac802154 | |
| parent | f7a1dd6e3ad59f0cfd51da29dfdbfd54122c5916 (diff) | |
| download | lwn-2c1bbbffa0b644fab4f91878cde0c2e8f52e2dcc.tar.gz lwn-2c1bbbffa0b644fab4f91878cde0c2e8f52e2dcc.zip | |
net: mac802154: comparision issue of type cast, finding by EXTRA_CFLAGS=-W
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>
Diffstat (limited to 'net/mac802154')
| -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 a4dcaf1dd4b6..703c1210d223 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; |