[SCSI] libfc: Correct use of ! and &
Author: Julia Lawall <julia@diku.dk>
!ep->esb_stat is either 1 or 0, and the rightmost bit of ESB_ST_COMPLETE is
always 0, making the result of !ep->esb_stat & ESB_ST_COMPLETE always 0.
Thus parentheses around the argument to ! seem needed.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
//
@@ expression E; constant C; @@
(
!E & !C
|
- !E & C
+ !(E & C)
)
//
Signed-off-by: Julia Lawall
Signed-off-by: James Bottomley
---
drivers/scsi/libfc/fc_exch.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index 505825b..8a0c5c2 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -281,7 +281,7 @@ static void fc_exch_release(struct fc_exch *ep)
ep->destructor(&ep->seq, ep->arg);
if (ep->lp->tt.exch_put)
ep->lp->tt.exch_put(ep->lp, mp, ep->xid);
- WARN_ON(!ep->esb_stat & ESB_ST_COMPLETE);
+ WARN_ON(!(ep->esb_stat & ESB_ST_COMPLETE));
mempool_free(ep, mp->ep_pool);
}
} |
---
drivers/scsi/libfc/fc_exch.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index 505825b..8a0c5c2 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -281,7 +281,7 @@ static void fc_exch_release(struct fc_exch *ep)
ep->destructor(&ep->seq, ep->arg);
if (ep->lp->tt.exch_put)
ep->lp->tt.exch_put(ep->lp, mp, ep->xid);
- WARN_ON(!ep->esb_stat & ESB_ST_COMPLETE);
+ WARN_ON(!(ep->esb_stat & ESB_ST_COMPLETE));
mempool_free(ep, mp->ep_pool);
}
}