drivers/isdn: correct use of ! and &

In commit e6bafba5b4765a5a252f1b8d31cbf6d2459da337 ("wmi: (!x & y)
strikes again"), a bug was fixed that involved converting !x & y to !(x
& y).  The code below shows the same pattern, and thus should perhaps be
fixed in the same way.

This is not tested and clearly changes the semantics, so it is only
something to consider.

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

// <smpl>
@@ expression E1,E2; @@
(
  !E1 & !E2
|
- !E1 & E2
+ !(E1 & E2)
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/isdn/isdnloop/isdnloop.c b/drivers/isdn/isdnloop/isdnloop.c
index 655ef9a3f4df..a335c85a736e 100644
--- a/drivers/isdn/isdnloop/isdnloop.c
+++ b/drivers/isdn/isdnloop/isdnloop.c
@@ -1289,7 +1289,7 @@ isdnloop_command(isdn_ctrl * c, isdnloop_card * card)
                                 }
                                 break;
                 case ISDN_CMD_CLREAZ:
-                                if (!card->flags & ISDNLOOP_FLAGS_RUNNING)
+                                if (!(card->flags & ISDNLOOP_FLAGS_RUNNING))
                                         return -ENODEV;
                                 if (card->leased)
                                         break;
@@ -1333,7 +1333,7 @@ isdnloop_command(isdn_ctrl * c, isdnloop_card * card)
                                 }
                                 break;
                 case ISDN_CMD_SETL3:
-                                if (!card->flags & ISDNLOOP_FLAGS_RUNNING)
+                                if (!(card->flags & ISDNLOOP_FLAGS_RUNNING))
                                         return -ENODEV;
                                 return 0;
                 default:
@@ -1380,7 +1380,7 @@ if_writecmd(const u_char __user *buf, int len, int id, int channel)
         isdnloop_card *card = isdnloop_findcard(id);
 
         if (card) {
-                if (!card->flags & ISDNLOOP_FLAGS_RUNNING)
+                if (!(card->flags & ISDNLOOP_FLAGS_RUNNING))
                         return -ENODEV;
                 return (isdnloop_writecmd(buf, len, 1, card));
         }