There were a number of erroneous comments and incorret 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.
Fixed comments and removed erroneous hbalock checks
Signed-off-by: Dick Kennedy <dick.kenn...@broadcom.com>
Signed-off-by: James Smart <jsmart2...@gmail.com>
CC: Bart Van Assche <bvanass...@acm.org>
---
drivers/scsi/lpfc/lpfc_attr.c | 5 +++--
drivers/scsi/lpfc/lpfc_sli.c | 48 ++++++++++++++++++++++++++++---------------
2 files changed, 34 insertions(+), 19 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index e9adb3f1961d..31b963ae7289 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -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;
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 2acda188b0dc..06d1c183266e 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -991,15 +991,14 @@ lpfc_cleanup_vports_rrqs(struct lpfc_vport *vport, struct
lpfc_nodelist *ndlp)
* @ndlp: Targets nodelist pointer for this exchange.
* @xritag the xri in the bitmap to test.
*
- * This function is called with hbalock held. This function
- * returns 0 = rrq not active for this xri
- * 1 = rrq is valid for this xri.
+ * This function returns:
+ * 0 = rrq not active for this xri
+ * 1 = rrq is valid for this xri.
**/
int
lpfc_test_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
uint16_t xritag)
{
- lockdep_assert_held(&phba->hbalock);
if (!ndlp)
return 0;
if (!ndlp->active_rrqs_xri_bitmap)
@@ -1102,10 +1101,11 @@ lpfc_set_rrq_active(struct lpfc_hba *phba, struct
lpfc_nodelist *ndlp,
* @phba: Pointer to HBA context object.
* @piocb: Pointer to the iocbq.
*
- * This function is called with the ring lock held. This function
- * gets a new driver sglq object from the sglq list. If the
- * list is not empty then it is successful, it returns pointer to the newly
- * allocated sglq object else it returns NULL.
+ * The driver calls this function with either the nvme ls ring lock
+ * or the fc els ring lock held depending on the iocb usage. This function
+ * gets a new driver sglq object from the sglq list. If the list is not empty
+ * then it is successful, it returns pointer to the newly allocated sglq
+ * object else it returns NULL.
**/
static struct lpfc_sglq *
__lpfc_sli_get_els_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq)
@@ -1115,9 +1115,15 @@ __lpfc_sli_get_els_sglq(struct lpfc_hba *phba, struct
lpfc_iocbq *piocbq)
struct lpfc_sglq *start_sglq = NULL;
struct lpfc_io_buf *lpfc_cmd;
struct lpfc_nodelist *ndlp;
+ struct lpfc_sli_ring *pring = NULL;
int found = 0;
- lockdep_assert_held(&phba->hbalock);
+ if (piocbq->iocb_flag & LPFC_IO_NVME_LS)
+ pring = phba->sli4_hba.nvmels_wq->pring;
+ else
+ pring = lpfc_phba_elsring(phba);
+
+ lockdep_assert_held(&pring->ring_lock);
if (piocbq->iocb_flag & LPFC_IO_FCP) {
lpfc_cmd = (struct lpfc_io_buf *) piocbq->context1;
@@ -1560,7 +1566,8 @@ lpfc_sli_ring_map(struct lpfc_hba *phba)
* @pring: Pointer to driver SLI ring object.
* @piocb: Pointer to the driver iocb object.
*
- * This function is called with hbalock held. The function adds the
+ * The driver calls this function with the hbalock held for SLI3 ports or
+ * the ring lock held for SLI4 ports. The function adds the
* new iocb to txcmplq of the given ring. This function always returns
* 0. If this function is called for ELS ring, this function checks if
* there is a vport associated with the ELS command. This function also
@@ -1570,7 +1577,10 @@ static int
lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *piocb)
{
- lockdep_assert_held(&phba->hbalock);
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ lockdep_assert_held(&pring->ring_lock);
+ else
+ lockdep_assert_held(&phba->hbalock);
BUG_ON(!piocb);
@@ -2967,8 +2977,8 @@ lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct
lpfc_sli_ring *pring,
*
* This function looks up the iocb_lookup table to get the command iocb
* corresponding to the given response iocb using the iotag of the
- * response iocb. This function is called with the hbalock held
- * for sli3 devices or the ring_lock for sli4 devices.
+ * response iocb. The driver calls this function with the hbalock held
+ * for SLI3 ports or the ring lock held for SLI4 ports.
* This function returns the command iocb object if it finds the command
* iocb else returns NULL.
**/
@@ -2979,7 +2989,11 @@ lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
{
struct lpfc_iocbq *cmd_iocb = NULL;
uint16_t iotag;
- lockdep_assert_held(&phba->hbalock);
+
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ lockdep_assert_held(&pring->ring_lock);
+ else
+ lockdep_assert_held(&phba->hbalock);
iotag = prspiocb->iocb.ulpIoTag;
@@ -3009,8 +3023,8 @@ lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
* @iotag: IOCB tag.
*
* This function looks up the iocb_lookup table to get the command iocb
- * corresponding to the given iotag. This function is called with the
- * hbalock held.
+ * corresponding to the given iotag. The driver calls this function with
+ * the ring lock held because this function is an SLI4 port only helper.
* This function returns the command iocb object if it finds the command
* iocb else returns NULL.
**/
@@ -3020,7 +3034,7 @@ lpfc_sli_iocbq_lookup_by_tag(struct lpfc_hba *phba,
{
struct lpfc_iocbq *cmd_iocb = NULL;
- lockdep_assert_held(&phba->hbalock);
+ lockdep_assert_held(&pring->ring_lock);
if (iotag != 0 && iotag <= phba->sli.last_iotag) {
cmd_iocb = phba->sli.iocbq_lookup[iotag];
if (cmd_iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ) {
--
2.13.7
