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scsi: lpfc: fix 12.4.0.0 GPF at boot 

The 12.4.0.0 patch that merged WQ/CQ pairs into single per-cpu pair
contained a bug: a local variable was set to the queue pair by index.  This
should have allowed the local variable to be natively used.  Instead, the
code reused the index relative to the local variable, obtaining a random
pointer value that when used eventually faulted the system

Convert offending code to use local variable.

Fixes: c00f62e6c5 ("scsi: lpfc: Merge per-protocol WQ/CQ pairs into single per-cpu pair")
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Tested-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2019-08-28 16:19:11 -07:00 committed by Martin K. Petersen
parent 9db6c14c36
commit 01f2ef6d18
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/lpfc/lpfc_sli.c
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@ -5553,7 +5553,7 @@ lpfc_sli4_arm_cqeq_intr(struct lpfc_hba *phba)
for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
qp = &sli4_hba->hdwq[qidx];
/* ARM the corresponding CQ */
sli4_hba->sli4_write_cq_db(phba, qp[qidx].io_cq, 0,
sli4_hba->sli4_write_cq_db(phba, qp->io_cq, 0,
LPFC_QUEUE_REARM);
}