On 8/12/2019 1:31 AM, Fuqian Huang wrote:
As spin_unlock_irq will enable interrupts. Function lpfc_findnode_rpi is called from lpfc_sli_abts_err_handler (./drivers/scsi/lpfc/lpfc_sli.c) <- lpfc_sli_async_event_handler <- lpfc_sli_process_unsol_iocb <- lpfc_sli_handle_fast_ring_event <- lpfc_sli_fp_intr_handler <- lpfc_sli_intr_handler and lpfc_sli_intr_handler is an interrupt handler. Interrupts are enabled in interrupt handler. Use spin_lock_irqsave/spin_unlock_irqrestore instead of spin_(un)lock_irq in IRQ context to avoid this.Signed-off-by: Fuqian Huang <huangfq.dax...@gmail.com> --- drivers/scsi/lpfc/lpfc_hbadisc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 28ecaa7fc715..cf02c352b324 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -6065,10 +6065,11 @@ lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_nodelist *ndlp; + unsigned long flags;- spin_lock_irq(shost->host_lock);+ spin_lock_irqsave(shost->host_lock, flags); ndlp = __lpfc_findnode_rpi(vport, rpi); - spin_unlock_irq(shost->host_lock); + spin_unlock_irqrestore(shost->host_lock, flags); return ndlp; }
Thank you. Reviewed-by: James Smart <james.sm...@broadcom.com> -- james
