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[SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put()

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The dereference to 'put_index' should be moved below the NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Wei Yongjun 2012-12-02 08:33:24 -05:00 committed by James Bottomley
parent d4a2618fa7
commit 5a25bf36b7
1 changed files with 2 additions and 1 deletions
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drivers/scsi/lpfc/lpfc_sli.c
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@ -438,11 +438,12 @@ lpfc_sli4_rq_put(struct lpfc_queue *hq, struct lpfc_queue *dq,
struct lpfc_rqe *temp_hrqe;
struct lpfc_rqe *temp_drqe;
struct lpfc_register doorbell;
int put_index = hq->host_index;
int put_index;
/* sanity check on queue memory */
if (unlikely(!hq) || unlikely(!dq))
return -ENOMEM;
put_index = hq->host_index;
temp_hrqe = hq->qe[hq->host_index].rqe;
temp_drqe = dq->qe[dq->host_index].rqe;