diff options
| author | Julia Lawall <julia@diku.dk> | 2008-10-10 21:33:16 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-10-10 21:33:54 +0200 |
| commit | b2bbb642ac2829006a81ae164e2f06ebc22f81dd (patch) | |
| tree | c76cca05a39a1525f6e7978ac338d410ffdbd54f | |
| parent | f9c9fe3ecfc0c5ff17728d0c5ee95a4e269ec190 (diff) | |
[S390] cio: Correct use of ! and &
In commit e6bafba5b4765a5a252f1b8d31cbf6d2459da337, 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. In particular,
the result of !scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND is
always just !scsw_stctl(&request->irb.scsw).
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@diku.dk>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | drivers/s390/cio/chsc_sch.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c index 91ca87aa9f9..f49f0e502b8 100644 --- a/drivers/s390/cio/chsc_sch.c +++ b/drivers/s390/cio/chsc_sch.c @@ -261,7 +261,7 @@ static int chsc_examine_irb(struct chsc_request *request) { int backed_up; - if (!scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND) + if (!(scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND)) return -EIO; backed_up = scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHAIN_CHECK; request->irb.scsw.cmd.cstat &= ~SCHN_STAT_CHAIN_CHECK; |