This is a note to let you know that I've just added the patch titled
net: mac802154: comparision issue of type cast, finding by EXTRA_CFLAGS=-W
to the 3.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-mac802154-comparision-issue-of-type-cast-finding-by-extra_cflags-w.patch
and it can be found in the queue-3.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From f0cd13a2baac658a8ce21427800ba4cc7867aa22 Mon Sep 17 00:00:00 2001
From: Chen Gang <[email protected]>
Date: Thu, 25 Apr 2013 00:49:55 +0000
Subject: net: mac802154: comparision issue of type cast, finding by
EXTRA_CFLAGS=-W
From: Chen Gang <[email protected]>
[ 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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
net/mac802154/mac802154.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- 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;
Patches currently in stable-queue which might be from [email protected] are
queue-3.9/net-mac802154-comparision-issue-of-type-cast-finding-by-extra_cflags-w.patch
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