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scsi: lpfc: Fix lockdep errors in sli_ringtx_put

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Fix lockdep error in __lpfc_sli_ringtx_put(): The hbalock is valid for
sli3, but not for sli4.  Change lockdep to look at ring lock if sli4.

Also update comment in __lpfc_sli_issue_iocb_s4() to reflect proper
lock. Note: lockdep check is already correct.

Link: https://lore.kernel.org/r/20191018211832.7917-4-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 2019-10-18 14:18:19 -07:00 committed by Martin K. Petersen
parent 0a5ce73197
commit 27f3efd637
1 changed files with 7 additions and 3 deletions
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10
drivers/scsi/lpfc/lpfc_sli.c
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@ -9004,7 +9004,8 @@ lpfc_mbox_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
* @pring: Pointer to driver SLI ring object.
* @piocb: Pointer to address of newly added command iocb.
*
* This function is called with hbalock held to add a command
* This function is called with hbalock held for SLI3 ports or
* the ring lock held for SLI4 ports to add a command
* iocb to the txq when SLI layer cannot submit the command iocb
* to the ring.
**/
@ -9012,7 +9013,10 @@ void
__lpfc_sli_ringtx_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);
/* Insert the caller's iocb in the txq tail for later processing. */
list_add_tail(&piocb->list, &pring->txq);
}
@ -9903,7 +9907,7 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
* __lpfc_sli_issue_iocb_s4 is used by other functions in the driver to issue
* an iocb command to an HBA with SLI-4 interface spec.
*
* This function is called with hbalock held. The function will return success
* This function is called with ringlock held. The function will return success
* after it successfully submit the iocb to firmware or after adding to the
* txq.
**/