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scsi: lpfc: resolve lockdep warnings

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There were a number of erroneous comments and incorrect older lockdep
checks that were causing a number of warnings.

Resolve the following:

 - Inconsistent lock state warnings in lpfc_nvme_info_show().

 - Fixed comments and code on sequences where ring lock is now held instead
   of hbalock.

 - Reworked calling sequences around lpfc_sli_iocbq_lookup(). Rather than
   locking prior to the routine and have routine guess on what lock, take
   the lock within the routine. The lockdep check becomes unnecessary.

 - Fixed comments and removed erroneous hbalock checks.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
CC: Bart Van Assche <bvanassche@acm.org>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart
2019-05-06 17:26:47 -07:00
committed by Martin K. Petersen
parent d0adee5d12
commit e2a8be5696
2 changed files with 56 additions and 33 deletions
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5
drivers/scsi/lpfc/lpfc_attr.c
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@@ -176,6 +176,7 @@ lpfc_nvme_info_show(struct device *dev, struct device_attribute *attr,
int i;
int len = 0;
char tmp[LPFC_MAX_NVME_INFO_TMP_LEN] = {0};
unsigned long iflags = 0;
if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) {
len = scnprintf(buf, PAGE_SIZE, "NVME Disabled\n");
@@ -374,11 +375,11 @@ lpfc_nvme_info_show(struct device *dev, struct device_attribute *attr,
list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
nrport = NULL;
spin_lock(&vport->phba->hbalock);
spin_lock_irqsave(&vport->phba->hbalock, iflags);
rport = lpfc_ndlp_get_nrport(ndlp);
if (rport)
nrport = rport->remoteport;
spin_unlock(&vport->phba->hbalock);
spin_unlock_irqrestore(&vport->phba->hbalock, iflags);
if (!nrport)
continue;