From: Johannes Thumshirn <jthumshirn@suse.de>
Date: Mon, 18 Jul 2016 14:06:03 +0000 (+0200)
Subject: lpfc: call lpfc_sli_validate_fcp_iocb() with the hbalock held
X-Git-Tag: v4.8-rc1~20^2~13
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=31979008fdae72d7441643f3a5b1bdaedf481335;p=platform%2Fkernel%2Flinux-exynos.git

lpfc: call lpfc_sli_validate_fcp_iocb() with the hbalock held

Call lpfc_sli_validate_fcp_iocb() with the hbalock held, as the pointer
to iocbq is not guaranteed to still be valid after looking it up.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---

diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index c8fd0a3..351d08a 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -10203,6 +10203,7 @@ lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id,
 	struct lpfc_iocbq *iocbq;
 	int sum, i;
 
+	spin_lock_irq(&phba->hbalock);
 	for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
 		iocbq = phba->sli.iocbq_lookup[i];
 
@@ -10210,6 +10211,7 @@ lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id,
 						ctx_cmd) == 0)
 			sum++;
 	}
+	spin_unlock_irq(&phba->hbalock);
 
 	return sum;
 }