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scsi: lpfc: Fix spinlock_irq issues in lpfc_els_flush_cmd()

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While reviewing the CT behavior, issues with spinlock_irq were seen. The
driver should be using spinlock_irqsave/irqrestore in the els flush
routine.

Changed to spinlock_irqsave/irqrestore.

Link: https://lore.kernel.org/r/20190922035906.10977-15-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2019-09-21 20:59:00 -07:00 committed by Martin K. Petersen
parent 15498dc1a5
commit d38b4a527f
1 changed files with 9 additions and 7 deletions
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16
drivers/scsi/lpfc/lpfc_els.c
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@ -7991,20 +7991,22 @@ lpfc_els_flush_cmd(struct lpfc_vport *vport)
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *tmp_iocb, *piocb;
IOCB_t *cmd = NULL;
unsigned long iflags = 0;
lpfc_fabric_abort_vport(vport);
/*
* For SLI3, only the hbalock is required. But SLI4 needs to coordinate
* with the ring insert operation. Because lpfc_sli_issue_abort_iotag
* ultimately grabs the ring_lock, the driver must splice the list into
* a working list and release the locks before calling the abort.
*/
spin_lock_irq(&phba->hbalock);
spin_lock_irqsave(&phba->hbalock, iflags);
pring = lpfc_phba_elsring(phba);
/* Bail out if we've no ELS wq, like in PCI error recovery case. */
if (unlikely(!pring)) {
spin_unlock_irq(&phba->hbalock);
spin_unlock_irqrestore(&phba->hbalock, iflags);
return;
}
@ -8045,21 +8047,21 @@ lpfc_els_flush_cmd(struct lpfc_vport *vport)
if (phba->sli_rev == LPFC_SLI_REV4)
spin_unlock(&pring->ring_lock);
spin_unlock_irq(&phba->hbalock);
spin_unlock_irqrestore(&phba->hbalock, iflags);
/* Abort each txcmpl iocb on aborted list and remove the dlist links. */
list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
spin_lock_irq(&phba->hbalock);
spin_lock_irqsave(&phba->hbalock, iflags);
list_del_init(&piocb->dlist);
lpfc_sli_issue_abort_iotag(phba, pring, piocb);
spin_unlock_irq(&phba->hbalock);
spin_unlock_irqrestore(&phba->hbalock, iflags);
}
if (!list_empty(&abort_list))
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"3387 abort list for txq not empty\n");
INIT_LIST_HEAD(&abort_list);
spin_lock_irq(&phba->hbalock);
spin_lock_irqsave(&phba->hbalock, iflags);
if (phba->sli_rev == LPFC_SLI_REV4)
spin_lock(&pring->ring_lock);
@ -8099,7 +8101,7 @@ lpfc_els_flush_cmd(struct lpfc_vport *vport)
if (phba->sli_rev == LPFC_SLI_REV4)
spin_unlock(&pring->ring_lock);
spin_unlock_irq(&phba->hbalock);
spin_unlock_irqrestore(&phba->hbalock, iflags);
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &abort_list,