From c26bd6602e1d348bfa754dc55e5608c922dd2801 Mon Sep 17 00:00:00 2001 From: James Smart Date: Wed, 23 Mar 2022 13:55:45 -0700 Subject: scsi: lpfc: Fix locking for lpfc_sli_iocbq_lookup() The rules changed for lpfc_sli_iocbq_lookup() vs locking. Prior, the routine properly took out the lock. In newly refactored code, the locks must be held when calling the routine. Fix lpfc_sli_process_sol_iocb() to take the locks before calling the routine. Fix lpfc_sli_handle_fast_ring_event() to not release the locks to call the routine. Link: https://lore.kernel.org/r/20220323205545.81814-3-jsmart2021@gmail.com Fixes: 1b64aa9eae28 ("scsi: lpfc: SLI path split: Refactor fast and slow paths to native SLI4") Co-developed-by: Dick Kennedy Signed-off-by: Dick Kennedy Signed-off-by: James Smart Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_sli.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'drivers/scsi') diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 70c3929a9fb4..bda2a7ba4e77 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -3721,7 +3721,15 @@ lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, unsigned long iflag; u32 ulp_command, ulp_status, ulp_word4, ulp_context, iotag; + if (phba->sli_rev == LPFC_SLI_REV4) + spin_lock_irqsave(&pring->ring_lock, iflag); + else + spin_lock_irqsave(&phba->hbalock, iflag); cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq); + if (phba->sli_rev == LPFC_SLI_REV4) + spin_unlock_irqrestore(&pring->ring_lock, iflag); + else + spin_unlock_irqrestore(&phba->hbalock, iflag); ulp_command = get_job_cmnd(phba, saveq); ulp_status = get_job_ulpstatus(phba, saveq); @@ -4058,10 +4066,8 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba, break; } - spin_unlock_irqrestore(&phba->hbalock, iflag); cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring, &rspiocbq); - spin_lock_irqsave(&phba->hbalock, iflag); if (unlikely(!cmdiocbq)) break; if (cmdiocbq->cmd_flag & LPFC_DRIVER_ABORTED) -- cgit v1.2.3-70-g09d2