linux-kernel - [PATCH 3/3] drivers/staging/rt2860,rt2870: Correct use of ! and &

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Message-ID: <Pine.LNX.4.64.0812241623380.5475@ask.diku.dk>
Date:	Wed, 24 Dec 2008 16:24:05 +0100 (CET)
From:	Julia Lawall <julia@...u.dk>
To:	gregkh@...e.de, linux-wireless@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 3/3] drivers/staging/rt2860,rt2870: Correct use of ! and &

From: Julia Lawall <julia@...u.dk>

IW_ENCODE_MODE is 0xF000 and thus !erq->flags & IW_ENCODE_MODE is always 0.
I assume that !(erq->flags & IW_ENCODE_MODE) was intended.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@ expression E; constant C; @@
(
  !E & !C
|
- !E & C
+ !(E & C)
)
// </smpl>

Signed-off-by: Julia Lawall <julia@...u.dk>

---
 drivers/staging/rt2860/sta_ioctl.c |    2 +-
 drivers/staging/rt2870/sta_ioctl.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff -u -p a/drivers/staging/rt2860/sta_ioctl.c b/drivers/staging/rt2860/sta_ioctl.c
--- a/drivers/staging/rt2860/sta_ioctl.c
+++ b/drivers/staging/rt2860/sta_ioctl.c
@@ -1756,7 +1756,7 @@ int rt_ioctl_siwencode(struct net_device
             }
         else
 			/* Don't complain if only change the mode */
-			if(!erq->flags & IW_ENCODE_MODE) {
+			if (!(erq->flags & IW_ENCODE_MODE)) {
 				return -EINVAL;
 		}
 	}
diff -u -p a/drivers/staging/rt2870/sta_ioctl.c b/drivers/staging/rt2870/sta_ioctl.c
--- a/drivers/staging/rt2870/sta_ioctl.c
+++ b/drivers/staging/rt2870/sta_ioctl.c
@@ -1776,7 +1776,7 @@ int rt_ioctl_siwencode(struct net_device
             }
         else
 			/* Don't complain if only change the mode */
-			if(!erq->flags & IW_ENCODE_MODE) {
+			if (!(erq->flags & IW_ENCODE_MODE)) {
 				return -EINVAL;
 		}
 	}
--
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