diff options
| author | James Smart <jsmart2021@gmail.com> | 2017-05-15 15:20:39 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-05-16 21:17:54 -0400 |
| commit | 0c9c6a75141810acade82add4f4708959a5d3a1d (patch) | |
| tree | 5a0490280fde16d0cde18363d9bf4fadf97fd90c /drivers/scsi/lpfc/lpfc_hbadisc.c | |
| parent | 845d9e8df2fa879e6494e786f290e1fd5560ac8c (diff) | |
scsi: lpfc: Fix system crash when port is reset.
The driver panic when using the els_wq during port reset.
Check for NULL els_wq before dereferencing.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_hbadisc.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_hbadisc.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 0482c5580331..dcc9b3858778 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -693,9 +693,9 @@ lpfc_work_done(struct lpfc_hba *phba) pring = lpfc_phba_elsring(phba); status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); status >>= (4*LPFC_ELS_RING); - if ((status & HA_RXMASK) || - (pring->flag & LPFC_DEFERRED_RING_EVENT) || - (phba->hba_flag & HBA_SP_QUEUE_EVT)) { + if (pring && (status & HA_RXMASK || + pring->flag & LPFC_DEFERRED_RING_EVENT || + phba->hba_flag & HBA_SP_QUEUE_EVT)) { if (pring->flag & LPFC_STOP_IOCB_EVENT) { pring->flag |= LPFC_DEFERRED_RING_EVENT; /* Set the lpfc data pending flag */ |