lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[SCSI] libfc: Correct use of ! and &

Browse Source 
!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/)

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

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Julia Lawall
2009-02-04 22:17:29 +01:00
committed by James Bottomley
parent f290f1970f
commit aa6cd29b72
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/libfc/fc_exch.c
View File

@@ -281,7 +281,7 @@ static void fc_exch_release(struct fc_exch *ep)
ep->destructor(&ep->seq, ep->arg); ep->destructor(&ep->seq, ep->arg);
if (ep->lp->tt.exch_put) if (ep->lp->tt.exch_put)
ep->lp->tt.exch_put(ep->lp, mp, ep->xid); 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); mempool_free(ep, mp->ep_pool);
} }
} }